Test and measurement product catalog€¦ · remote charge converters (RCC). Piezoelectric charge mode designs are ideal for use in extreme environments or in applications in which

Test and measurement product catalog

Accelerometers · Acoustics · Pressure sensors · Signal conditioners · Electronics · Calibration · LVDTs · Cables

2 3Meggitt Sensing Systems introductionMeggitt PLC introduction

Meggitt Aircraft Braking Systems is the number one producer of wheels, brakes and brake control systems for regional, commercial transports and business jets and military aircraft, with products on an active fleet of over 30,000. Its capabilities include helicopter rotor brakes and brake temperature monitoring.

Meggitt Control Systems is a leading supplier of aerospace valves, heat exchangers, environmental control systems, high performance electro-mechanical fans, motors, compressors, controllers and specialist pumps and industrial fuel and bleed air control valves and ground fuelling products.

Meggitt Polymers & Composites designs and develops aircraft seals, flexible fuel tanks and coatings, complex composite structures, smart ice protection systems and sub-assemblies and interior panels and accessories.

Meggitt Sensing Systems excels in high performance sensing and monitoring systems for applications in aerospace, energy, industrial and laboratory test.

The Meggitt Equipment Group was created to enable a set of smaller capabilities market their offerings to specialist customers, while benefiting from the wider Meggitt group’s investment in shared services and common processes. Its capabilities include training systems (live and virtual fire) and combat support (ammunition-handling, military electronics cooling and countermeasure launch and recovery systems), avionics, automotive and industrial control electronics, unique heat transfer equipment for hydrocarbon processing and aircraft fire protection and control.

In April 2011, Pacific Scientific Aerospace joined the Meggitt Equipment Group, creating a comprehensive ATA 26 fire protection system in-house and expanding its capability in more electric technologies (motion control, power conversion, high-density magnetics, power sensors, interconnects and harnesses and next generation lithium batteries), electro-mechanical linear motion control and the latest in aircraft security tools.

www.meggitt.com

The Meggitt group, comprising a 10,000-plus workforce over 40 operating sites worldwide, specializes in smart engineering for extreme environments—high performance components and sub-systems for aerospace, defence and energy markets. Its sensing and control technologies are also deployed in land and marine-based gas turbines, oil and gas applications and the medical, mainstream industrial, test engineering and transportation sectors. The group is managed via five divisions.

Meggitt PLC

Our primary markets

Meggitt Sensing Systems, a Meggitt group division, has operated through its antecedents since 1927 under the names of Endevco®, Wilcoxon Research, Sensorex, ECET, Vibro-Meter, Lodge Ignition and Ferroperm Piezoceramics, aligning some of the world’s notable companies in the sensing industry with related products, services and applications.

Today, the capabilities and facilities of Meggitt Sensing Systems are integrated under one business unit. Headquartered in Switzerland and providing complete systems with these renowned product brands, from a single supply base.

Our unique yet wide portfolio includes high technology products and systems for civil and military aerospace applications. We are leaders in the energy, power generation, nuclear, oil and gas, industrial, laboratory measurement, automotive and space markets. Meggitt Sensing Systems deploys a wide array of technologies, including piezoelectric, piezoresistive, variable capacitance, inertial, capacitive, resistive, inductive, magnetic, microwave and optical, to address its key customer challenges in high-temperature, high shock, limited space and weight, biocompatibility and communications.

Leading the way in measurementWith our eight development and manufacturing sites located in Switzerland, France, United Kingdom, Denmark and the United States, we have unmatched capabilities to deliver more critical sensing solutions. An extensive sales and support network extends across Europe, Asia and the Americas to serve our customers worldwide.

Sensing solutions for challenging measurement applications Our facility in San Juan Capistrano, California, formerly known as Endevco® (www.endevco.com), specializes in mission-critical measurement in the aerospace, defence, automotive, industrial and medical sectors. Products include piezoelectric, piezoresistive and variable capacitance accelerometers; pressure transducers; microphones; laboratory and airborne; signal conditioning; electronics and systems calibration equipment.

Industrial sensing and simplified condition-based maintenance Our facility in Germantown, Maryland, formerly known as Wilcoxon Research (www.wilcoxon.com), specializes in highly reliable industrial vibration sensors and condition-based monitoring and predictive maintenance applications. The facility produces a wide range of vibration sensors for industrial, process control, military and test measurement. Its laboratories focus on state-of-the-art basic and applied research for military and government agencies.

Displacement sensors and inertial systems Our facility in Archamps, France, formerly known as Sensorex (www.sensorex.fr), specializes in linear and rotary displacements, inertial sensors and systems, hybrids and (micro)electronics for aerospace and industrial markets.

Meggitt Sensing Systems is the Meggitt division specializing in sensing and monitoring systems. We measure physical parameters in the extreme environments of aircraft, space vehicles, power generators, nuclear, oil and gas installations and test laboratories.

Meggitt Sensing Systems

Aerospace Energy Measurement

› Engine sensing

› Fluid sensing

› Inertial systems

› Ignition systems

› Engine monitoring

› Landing gear monitoring

› Vibration sensing

› Fire and flame detection

› Ignition systems

› Combustion monitoring

› Blade health monitoring

› Condition monitoring systems

› Acceleration, pressure, inertial, shock and vibration sensing

› Automotive crash test

› Cardiac rhythm monitoring

› Laboratory and airborne test instrumentation

› Calibration systems

4 5Table of contents Model number index

Product technology introduction .........................................................06

Endevco® Variable capacitance (VC) accelerometers ...........................................08 Piezoresistive accelerometers .............................................................10 Piezoresistive pressure transducers ....................................................16 Piezoelectric accelerometers ...............................................................18 Piezoelectric pressure sensors ............................................................25 Isotron® (IEPE) accelerometers ............................................................26 Microphones .........................................................................................34 Electronics ............................................................................................40 Calibration equipment ..........................................................................44 Cables ...................................................................................................46

Sensorex Servo inclinometers ..............................................................................48 Inertial systems/Servo accelerometers ...............................................50 LVDT and RVDT .....................................................................................52 LVDT/RVDT signal conditioners ............................................................54

Wilcoxon Research Structural excitation devices (shakers) ................................................56

Vibro-Meter Dynamic pressure sensors ...................................................................58

Accessories ..........................................................................................60

Product selection guide–application index ........................................64

Selecting accelerometers for test applications article ......................68

Endevco® incentive programs .............................................................70

Contacts ................................................................................................72

12M1B ....................................... 1922 ............................................... 1923 ............................................... 1925A ............................................ 2725B ............................................ 2727A11 ......................................... 2727A12 ......................................... 2727AM1 ....................................... 2735A ............................................ 2861C12 ........................................ 2861C13 ........................................ 2865 ............................................... 2865HT .......................................... 2866A11 ......................................... 2966A12 ......................................... 2966A50 ......................................... 2967 ............................................... 2971M ............................................ 1572 ............................................... 1573 ............................................... 1573FC .......................................... 1586 ............................................... 2987 ............................................... 29126 ............................................. 42133 ............................................. 42136 ............................................. 42256 ............................................. 30256HX ........................................ 30428 ............................................. 43433 ............................................. 43436 ............................................. 43482B .......................................... 43522M17 ...................................... 25522M25A .................................... 25752A12 ....................................... 30752A13 ....................................... 302220E ......................................... 192221F ......................................... 202222C ........................................ 202222D ........................................ 202224C ........................................ 202225 ........................................... 202225M5A .................................... 202226C ........................................ 212228C ........................................ 212230EM1 .................................... 212248M1 ...................................... 212250A ......................................... 302250AM1 .................................... 302255B ........................................ 312258A ......................................... 312262A ......................................... 11

2270 ........................................... 212271A ......................................... 222271AM20 .................................. 222273AM1 .................................... 222273AM20 .................................. 222276 ........................................... 232510 ........................................... 352510M4A .................................... 352680MX ...................................... 412685MX ...................................... 412771C ........................................ 412775B ........................................ 412777A ......................................... 412793 ........................................... 422911 ........................................... 452924 ........................................... 452925 ........................................... 453003C ........................................ 473006 ........................................... 473024 ........................................... 473027A ......................................... 473027AM3 .................................... 473027AVM13 ................................ 473053V ......................................... 473053VM1 .................................... 473060D ........................................ 473061 ........................................... 473075M6 ...................................... 473090C ........................................ 473090CM12 .................................. 473090DV ...................................... 473091F ......................................... 473095A ......................................... 474416B ........................................ 414430A ......................................... 414830A ......................................... 415220B-100 ................................. 316222S ......................................... 236233C ........................................ 236237M70 .................................... 236634C ........................................ 416917B ........................................ 476917D ........................................ 476918M30 .................................... 477231C ........................................ 137240C ........................................ 247250A ......................................... 317250AM1 .................................... 327251A ......................................... 327253C ........................................ 327255A ......................................... 337259B ........................................ 33

7264 ........................................... 127264C ........................................ 127264D ........................................ 127264G ........................................ 127265A ......................................... 117265A-HS .................................. 117268C ........................................ 117269 ........................................... 117270A ......................................... 147270AM4 .................................... 147270AM6 .................................... 147274 ........................................... 147286 ........................................... 137287 ........................................... 137290A ........................................... 97290D .......................................... 97290E ........................................... 97302BM4 ................................... 137703A ......................................... 247704A ......................................... 248507C ........................................ 178510B ........................................ 178510C ........................................ 178511A ......................................... 178515C ........................................ 178530B ........................................ 178530BM37 ................................. 178530C ........................................ 178540 ........................................... 1728959F ....................................... 4528959FV ..................................... 4540366 ........................................... 9CAACS ....................................... 44CP211 ........................................ 59D60H .......................................... 57D60L .......................................... 57D125L ........................................ 57EM26CA ..................................... 38EM26CB ..................................... 38EM26CF ..................................... 38EM26CS ..................................... 38EM40AD ..................................... 35EM40AE ..................................... 35EM40AM .................................... 35EM40AO ..................................... 35EM40AQ ..................................... 35EM40BD .................................... 35EM40BE ..................................... 35EM40DD .................................... 35EM40PH..................................... 39EM40PL ..................................... 39EM40PS ..................................... 39

EM42AA ..................................... 45EM46AD ..................................... 37EM46AE ..................................... 36EM46AO ..................................... 37EM46AQ ..................................... 36EM46BD .................................... 37EM46BE ..................................... 36F3 .............................................. 57F4 .............................................. 57F5B ............................................ 57F7 .............................................. 57F7-1 ........................................... 57F10............................................. 57RACK 9000 ................................ 55SX CER ...................................... 53SX12K ........................................ 53SX12V ........................................ 53SX12W ....................................... 53SX20MD ..................................... 53SX20MEC2R .............................. 53SX20MER ................................... 53SX36RV ...................................... 53SX3120 ....................................... 55SX3310 ....................................... 55SX3320 ....................................... 55SX9130 ....................................... 55SX9131 ....................................... 55SX41100 ..................................... 49SX41200 ..................................... 49SX41400 ..................................... 49SX41600 ..................................... 49SX41800 ..................................... 51SX43030 ..................................... 51SX43040 ..................................... 51SX43690 ..................................... 51SX46110 ..................................... 49SX46120 ..................................... 49SX690210279 ............................. 55Z11 ............................................. 57Z602WA ..................................... 57Z820WA ..................................... 57

Model Page number

Model number indexTable of contents

6 7Product technology introductionsProduct technology introductions

Accelerometers Isotron® Isotron® accelerometers feature an integral electronic impedance converter, eliminating the need for an external charge amplifier. They can drive signals across long cables with minimal distortion and noise pick-up. Isotron® electronics are compatible with the industry standard IEPE current sources that are built into many FFT analyzers and data acquisition systems (current sources and amplifiers are also available from Meggitt). These accelerometers are available in a wide selection of sensitivities, ranges, sizes and shapes. Specialty Endevco® accelerometers pioneered by Meggitt include lightweight versions with a 30 kHz bandwidth, high sensitivity units for seismic measurements, and sensors designed for higher temperature environments.

Accelerometers Piezoelectric Piezoelectric accelerometers are high-impedance charge mode sensors, known for having a high mean time between failures (MTBF) and greater temperature survivability. They are used with either a charge amplifier or in-line charge converter, the Endevco® model 133 three-channel signal conditioner or model 2771 series of remote charge converters (RCC). Piezoelectric charge mode designs are ideal for use in extreme environments or in applications in which the actual acceleration range to be measured is unknown. Endevco® accelerometers are offered in a variety of sizes and configurations to meet your testing needs. Special purpose units are also available for onboard flight, spacecraft and satellites; cryogenic and extreme high temperatures; and radiation environments.

Accelerometers Piezoresistive Available in both damped and undamped versions, Endevco® piezoresistive accelerometers are DC responding and ideal for measuring long duration transient events. Applications include automotive crash testing, high g shock and biomedical applications. Just as with our VC accelerometers, Endevco® piezoresistive sensing elements are also machined in-house at Meggitt’s own ISO 9001 certified MEMS facility in Sunnyvale. Units are available in surface mount packages, general use configurations and application specific packaging. They are also shipped in special electrostatic discharge (ESD) packaging for added protection during shipment and handling.

Accelerometers Variable capacitance (VC) VC accelerometers are DC responding sensors for measuring motion, long duration events and low-frequency vibration. They provide high sensitivities at very low frequencies and outstanding temperature stability. Endevco® accelerometers are known for their high-shock survivability and fast recovery time, while providing years of accurate measurements. Endevco® VC accelerometers operate from DC power supplies and require no special signal conditioning. All sensing elements are machined in-house at Meggitt’s own ISO 9001 certified MEMS facility in Sunnyvale, California, USA.

Cables Meggitt designs and manufactures its own cables and connectors for optimal performance in extreme environments. In-house expertise extends to both standard and custom designs, including low-noise (noise treated), high-temperature and multi-conductor models. All cables and connectors are subjected to rigorous quality assurance testing, ensuring their reliability within the intended application environment.

Electronics Signal conditioners and amplifiers Meggitt offers a comprehensive family of high-performance electronic instruments, ranging from simple battery operated signal conditioners to computer-controlled laboratory quality instruments that measure vibration, shock and pressure. These high-precision electronic instruments support both Endevco® and other industry piezoelectric (charge mode), VC, Isotron® (IEPE-type) and piezoresistive sensors.

Linear Variable Differential Transformer (LVDT) Meggitt’s Sensorex LVDTs are designed for high-precision displacement measurements within a variety of embedded automotive, factory control and automation applications, including production line assembly, control and welding; and laboratory test bench linear displacement and force and traction applications. LVDTs are designed without wearable parts for friction-free operation, while offering infinite resolution, long mean time before failure (MTBF), extended useful service life and high measurement repeatability. Units are highly resistant to shock and vibration, impervious to external magnetic fields and are designed to be compatible for use with all industry standard LVDT signal conditioners.

Microphones Piezoelectric Meggitt’s Endevco® piezoelectric microphones measure high-intensity acoustic noise parameters and very low-pressure fluctuations over a frequency range of 1 Hz to 10 kHz over a measurement range of 100 to >180 dB SPL. These hermetically sealed microphones are designed for operation in harsh environments over an operating temperature range of -55°C to +260°C (-67°F to +500°F). Units are also insensitive to altitude changes and ambient vibration.

Microphones Piezoresistive Endevco® piezoresistive microphones are used for measuring high-intensity sound over a wide frequency range with a 200 mV full-scale output, over a measurement range of 95 to 190 dB SPL, depending upon selected model. They are available with convenient 10-32 mounting threads, or a smaller version can be mounted using adhesives for flush mounting on flat or contoured surfaces. A full bridge sensor provides a convenient interface to standard bridge signal conditioning equipment. Applications include flight testing, wind tunnel and other aerodynamic studies, and engine inlet acoustic studies.

Microphones Prepolarized condenser Endevco® prepolarized condenser measurement microphones, available in ¹⁄₈”, ¼”, and ½” diameters, are offered in free-field, pressure, low-cost array and random incidence types and can be used to meet IEC and ANSI standards. All prepolarized condenser microphones are constructed with a stainless steel protective grid case and housing, as well as a special stainless steel alloy diaphragm, for high-reliability in a variety of environments. Models may be purchased either as stand-alone units or in a microphone and low-noise preamplifier combination with iTEDS (per IEEE 1451.4) for simplified test setups within larger channel count applications.

Pressure sensors Piezoelectric Meggitt offers Endevco® high-temperature piezoelectric dynamic pressure sensors for harsh environments. Applications include combustion monitoring, engine test cells, propulsion systems, or any other measurement that requires dynamic monitoring in high-temperature (+538°C/+1000°F) environments. These pressure sensors are offered in both single-ended and differential types to meet a variety of application requirements. Units also feature all-welded Inconel® housings for maximum temperature durability and are available with hardline cable assemblies.

Pressure sensors Piezoresitive Meggitt’s Endevco® high sensitivity miniature pressure sensors measure both dynamic and static pressure. These sensors feature a four-arm strain gage bridge design, implanted into a sculpted diaphragm, for wideband frequency response and twice the sensitivity of traditional flat diaphragms for improved resolution. The MEMS design provides an extremely high output signal and high resonance frequency with exceptional linearity and hysteresis performance. All sensors are temperature compensated between 0 and +200°F (-18 to +93°C), with the option of selecting the compensation range on special order. Absolute sensors are available in ranges as low as 0 to +15 and as high as 0 to +2000 psia. Gage/differential sensors are available in ranges as low as 0 to +1 psig and as high as 0 to +20,000 psig. Select models also offer operating temperatures up to +260°C (+500°F). All units are shipped in special electrostatic discharge (ESD) packaging for added protection during shipment and handling. Typical applications include process control, blast testing, automotive airbag testing, rocket motor analysis, jet engine inlet pressure measurements, transmission testing and hydraulics measurements.

Shakers Electrodynamic and piezoelectric Wilcoxon Research vibration generators, or “shakers”, are designed to generate vibration for structural research and modal testing requirements. The shaker produces a dynamic force operating on the mass reaction principle. Basically, a heavy mechanical component of the shaker is caused to oscillate by the drive signal from a power amplifier. A reaction force is generated, which excites the structure under test. Meggitt offers both low-frequency electromagnetic shakers and high-frequency piezoelectric shakers under the Wilcoxon Research brand, as well as the associated power amplifiers and impedance matching networks necessary for operation.

Product technology introductions

8 9Endevco®—Variable capacitance accelerometers Endevco®—Variable capacitance accelerometers

Variable capacitance accelerometers

Variable capacitance (VC) accelerometers are expressly designed to measure motion, long duration transient events and low-frequency vibration. They provide high sensitivities at very low frequencies, down to DC, with outstanding temperature stability.

Meggitt’s Endevco® VC accelerometers are known for exceptionally high measurement accuracy, shock survivability and fast recovery times over years of use. With internal MEMS sensing elements manufactured at Meggitt’s own US facility, all aspects of quality control are carefully monitored throughout the process. The sensors operate from an unregulated DC power source and require no special signal conditioning for operation.

Typical applications> Aircraft flight and flutter testing

> Automotive ride quality testing

> Train tilt and ride quality testing

> Engine load cycle

> Road Load Data Acquisition (RLDA)

Endevco® model 7290E series for flight testThe Endevco® model 7290E, a high-precision VC accelerometer series with integral digital temperature compensation, is recommended for flight test applications such as aircraft flutter, engine load cycle, control surfaces and landing gear response assessments. Available in seven models ranging from 2 g to 150 g, the series incorporates a VC sensing element with gas damping and internal overrange stops, enabling the transducer to withstand high shock and acceleration loads. Sensors feature +0.2% FSO typical non-linearity and hysteresis for most ranges and superior frequency response. The extended temperature range of the model 7290E allows for use of the same accelerometer at all aircraft measurement points, with a combined thermal zero and sensitivity shift of 2% over the temperature range of -40°C to +100°C (-40°F to +212°F). 7290E will operate accurately while exposed to cold temperatures at altitudes up to 13,000 meters (43,000 feet), as well as tolerate heat from the engine fan case and the brakes on the landing gear. As a result of these unique attributes, this VC accelerometer is able to measure low-frequency aircraft vibration events, with best-in-class thermal zero shift and sensitivity shift performance, while withstanding high g shock and acceleration loads.

> Seven available ranges from ± 2g to ± 150g> Broad frequency response> Digital temperature compensation> Differential or single ended output> Low cost, premium performance

Endevco® model number 7290A 7290D 7290E 40366

DescriptionFlight test standardDC responseGas damped

High accuracyDC response with iTEDSExtreme temperatures

Wide bandwidthDC responseDigital compensation

MEMS dieSurface mountpF output

Linear range g ± 2 / ± 10 / ± 30 / ± 50 / ± 100 / ± 150 ± 2 / ± 10 / ± 30 / ± 50 / ± 100 ± 2 / ± 5 / ± 10 / ± 30 / ± 50 /

± 100 / ± 150 ± 2

Sensitivity mV/g typical 1000 / 200 / 66 / 40 / 20 / 13.2 1000 / 200 / 66 / 40 / 20 1000 / 400 / 200 / 66 / 40 /

20 / 13.2 0.25 pF/g

Frequency response ± 5% 0–15 / 0–500 / 0–800 / 0–1000 / 0–1000

0–15 / 0–500 / 0–800 / 0–1000 / 0–1000

0–15 / 0–30 / 0–500 / 0–1000 / 0–2000 / 0–2000 / 0–2000 TBD based on electronics

Non linearity % FSO typical 0.2 / 1.0 (100 g / 150 g) 0.2 / 1.0 (100 g) 0.2 / 1.0 (100 g / 150 g) less than 1%

Shock limit g 5000 (2 g / 10 g) / 10,000 5000 (2 g / 10 g) / 10,000 5000 (2 g / 5 g / 10 g) / 10,000 5000

Operating temperature ˚C (˚F) -55 to +121 (-67 to +250) -55 to +125 (-67 to +257) -55 to +121 (-67 to +250) -40 to +100 (-40 to +212)

Dimensions mm (in) 25.4 x 21.6 x 7.6 (1.00 x 0.85 x 0.30)

25.4 x 21.6 x 9.1(1.00 x 0.85 x 0.36)

25.4 x 21.6 x 7.6(1.00 x 0.85 x 0.30)

2.90 x 2.05 x 0.79(0.11 x 0.08 x 0.03)

Weight grams 12 15 10 0.01

Excitation voltage Vdc 9.5 to 18 8.0 to 30 9.5 to 36 5

Mounting method Screw 4-40 Screw 4-40 Screw 4-40 SMT or Wirebond

10 11Endevco®—Piezoresistive accelerometers Endevco®—Piezoresistive accelerometers

Piezoresistive accelerometers

Since the earliest days of vehicle safety testing, Meggitt has worked with OEMs, test laboratories, ATD manufacturers and their associated design and test personnel to ensure accurate measurements of front, side and rear impact; crush zones; and in-vehicle occupant and pedestrian safety.

High-precision, DC responding Endevco® piezoresistive accelerometers are widely specified within these applications, due to their high-output, low mass designs and compact size for mounting within difficult-to-reach areas. Their high-impact shock and vibration, rotational acceleration, long duration transient motion, and low-frequency measurement capabilities are also particularly ideal. Most models are undamped to minimize phase shift.

Typical applications> Frontal, rear and side impact

> Low-frequency crash event detection

> Vehicle crush zones, crash sleds and rollover

> Global regulatory compliance testing

> Anthropomorphic test devices (ATD)

Endevco® model 7268CThe Endevco® model 7268C is a miniature, high output triaxial piezoresistive accelerometer, designed for crash testing and other applications that require minimal mass loading and a broad frequency response. This accelerometer facilitates simultaneous high-shock measurements across three orthogonal axes within a single, compact package, with two fixed resistors to enable shunt calibration on each axis. Both models are world SID-dummy approved, including Euro SID-1 and Euro SID-2, with specifications that meet EuroNCAP, SAEJ211 and SAEJ2570 standards.

> Triaxial, small size> Mechanical overtravel stops> Broad frequency response> Available in choice of two full-scale ranges of 500 g and 2000 g

Endevco® model number 2262A 7265A / A-HS 7268C 7269

DescriptionRuggedCritically dampedHigh sensitivity

Low massCritically dampedHigh sensitivity

TriaxialUndampedBroad frequency response

Miniature triaxialUndampedSurface mount

Linear range g ± 1000 / ± 2000 ± 100 / ± 20 ± 500 / ± 2000 ± 500 / ± 2000

Sensitivity mV/g typical 0.5 / 0.25 5 / 25 0.80 / 0.20 0.80 / 0.20

Frequency response ± 5%, Hz 1500 / 3000 0 to 800 / 0 to 500 (±5%) [± 1dB Hz] 3000 (Z) / 1500 (X&Y) 3000 / 4000

Shock limit g 2500 / 5000 2000 5000 / 10,000 5000 / 10,000

Operating temperature ˚C (˚F) -18 to +93 (0 to +200) -18 to +66 (0 to +150) -18 to +66 (0 to +150) -18 to +66 (0 to +150)

Dimensions mm (in) 15.9 x 25.4(5/8 Hex x 1.00)

11.94 x 16 x 7.75(0.470 x 0.630 x 0.305)

12.7 x 13.84 x 10.67(0.500 x 0.545 x 0.420)

10.16 x 7.1(0.400 x 0.280)

Weight gram 28 5 / 5.9 8 0.4

Mounting method 10-32 detachable stud Screw Screw Adhesive

12 13Endevco®—Piezoresistive accelerometers Endevco®—Piezoresistive accelerometers

Endevco® model 7264C seriesCrash industry standard

The Endevco® model 7264C is a global crash test industry standard, offering 10,000 g shock survivability. Its MEMS-based monolithic, undamped, full-bridge circuit design with integral mechanical stops produces virtually no phase shift over the useful frequency range with a broad frequency response. A wide range of excitation voltages, from 2 to 10 Volts, is also available to ensure compatibility with user data acquisition systems. The 7264C is also optionally available with <1% transverse sensitivity and < ± 25 mV zero measurand output to support stringent requirements, with fixed resistors to facilitate shunt calibration. With a frequency response extending down to DC (steady state), the accelerometer can reliably measure the long duration transient shocks typically found within vehicle front, rear and side impact events and ATDs, in applications where the source and location of impact can be identified.

Endevco® model number 7264 7264C 7264D 7264G

DescriptionLightweightUndampedHigh sensitivity

Crash test standardUndampedMeets SAE J211 / J2570

High resonanceUndampedMeets SAE J211 / J2570

Extremely ruggedDampedMeets SAE J211 / J2570

Linear range g ± 200 ± 500 / ± 2000 ± 2000 ± 2000

Sensitivity mV/g typical 2.5 0.80 / 0.20 0.20 0.20

Frequency response ± 5%, Hz 1000 3000 / 5000 6000 2000 / 4000

Shock limit g 2000 5000 / 10,000 10,000 10,000

Operating temperature ˚C (˚F) -18 to +66 (0 to +150) -18 to +66 (0 to +150) -18 to +66 (0 to +150) -18 to +66 (0 to +150)

Dimensions mm (in) 10.16 x 10.16 x 5.08(0.400 x 0.400 x 0.200)

10.16 x 10.16 x 5.13(0.400 x 0.400 x 0.202)

10.16 x 10.16 x 5.08(0.400 x 0.400 x 0.200)

10.16 x 10.16 x 5.13(0.400 x 0.400 x 0.202)

Weight gram 1 1.4 1.4 1.4

Mounting method Screw Screw Screw Screw

Endevco® model number 7231C 7286 / 7287 7302BM4

DescriptionATD standardUndampedOptional cable

LightweightLow costUndampedOptional cable

ATD standardAngularRotationalUndamped

Linear range g ± 750 ± 2000 50,000 rad/sec2

Sensitivity mV/g typical 0.20 0.003 / 0.2 5 mV/krad/sec2

Frequency response ± 5%, Hz 2000 4000 3 to 1600

Shock limit g 2500 10,000 2500

Operating temperature ˚C (˚F) -73 to +149 (-100 to +300) 10 to +30 (50 to +86) -18 to +121 (0 to +250)

Dimensions mm (in) 12.7 x 19.05 x 22.9(0.500 x 0.750 x 0.900)

11.8 x 17.8(0.47 x 0.7)

15.9 x 29.97(0.625 dia x 1.18)

Weight gram 24 less than 1 35

Mounting method 10-32 detachable stud Adhesive or screw Screw

14 15Endevco®—Piezoresistive accelerometersEndevco®—Piezoresistive accelerometers

Endevco® model number 71M 72 73 / 73FC

DescriptionSurface mountUndampedLow mass

Lightly dampedRuggedESD protection

TriaxialUndampedMounting options

Linear range g ± 2000 / 6000 / 20,000 / 60,000 ± 20,000 / 60,000 ± 2000 / 6000 / 20,000 / 60,000

Shock limit g 10,000 / 18,000 / 60,000 / 120,000 80,000 / 240,000 10,000 / 18,000 / 60,000 / 120,000

Operating temperature ˚C (˚F) -54 to +66 (-65 to +150) -54 to +66 (-65 to +150) -54 to +66 (-65 to +150)

Weight gram 0.06 0.16 0.92

Mounting method Adhesive SMT Adhesive or solder

High g piezoresistive shock accelerometersEndevco® extreme environment high g piezoresistive shock accelerometers feature a patented, monolithic, four-active arm bridge circuit design, incorporating the use of Meggitt’s own proprietary MEMS sensing element. The low mass, small size and unique construction of these sensors allows for high resonance frequency, low output impedance and zero damping for minimal phase shift over their useful frequency range. High resonance frequencies also permits their survival in the presence of high-frequency components, in a shock pulse that could otherwise shatter the seismic system of accelerometers having lower resonance frequencies. In addition, these undamped accelerometer models can also accurately respond to fast rise times and short duration shock motion. With a frequency response extending down to DC (steady state), the sensors are ideal for measuring long duration transient high g shocks while integrating critical acceleration data for velocity and displacement.

> Weapons and rocket testing> High-shock data recorders> Shock wave monitoring> Drop and impact testing

> Portable electronic device testing> Near-field pyroshock testing> Fuze/safe and arm> Pyrotechnic and penetration

Certain models detailed here are subject to International Traffic in Arms Regulations (ITAR), and as such a license is required for shipments outside the U.S. and other restrictions may apply.

Certain models detailed here are subject to International Traffic in Arms Regulations (ITAR), and as such a license is required for shipments outside the U.S. and other restrictions may apply.

Endevco® model 7274 triaxial high g piezoresistive shock accelerometer seriesThe Endevco® model 7274 series is a family of rugged, undamped, high g triaxial piezoresistive shock accelerometers, designed for high-acceleration shock measurements across three mutually perpendicular axes. It is the triaxial version of the popular single-axis 7270A series, sharing the same footprint, bolt pattern and highly efficient sensing system, with 20 years of field-proven pedigree across thousands of installations.

Available in four unique ranges of up to 60,000 g, the series incorporates three sensors mounted in a triaxial arrangement within a single housing. Selectable ranges per axis are available by special request. For each axis, the MEMS sensor is sculptured from a single chip of silicon, which includes the inertial mass and strain gages arranged in a patented four-active-arm Wheatstone bridge circuit configuration. This unique construction allows for a sensor with high resonance frequency, low output impedance, ruggedness 3x to over-range, and zero damping for minimal phase shift over its useful frequency range. Because units are undamped, they can also accurately respond to fast rise times and short duration shock motion. With a frequency response extending down to DC (steady state), the 7274 series is also ideal for measuring long duration transient shocks while integrating critical acceleration data for velocity and displacement.

Endevco® model number 7270A 7270AM4 7270AM6 7274

DescriptionHigh resonanceUndampedShock standard

High resonanceUndampedStud mount

RuggedMechanical filterStud mount

TriaxialUndampedHigh resonance

Linear range g ± 2000 / 6000 / 20,000 / 60,000 / 200,000

± 2000 / 6000 / 20,000 / 60,000 / 200,000

± 2000 / 6000 / 20,000 / 60,000

± 2000 / 6000 / 20,000 / 60,000

Shock limit g 10,000 / 18,000 / 60,000 / 180,000 / 200,000

10,000 / 18,000 / 60,000 / 180,000 / 200,000

10,000 / 18,000 / 60,000 / 100,000

10,000 / 18,000 / 60,000 / 180,000


Weight gram 1.5 1.5 8.4 2.9

Mounting method Screw 1/4-28 integral stud 1/4-28 integral stud Screw

16 17Endevco®—Piezoresistive pressure transducers Endevco®—Piezoresistive pressure transducers

Endevco® model number 8515C 8530B 8530BM37 8530C 8540

Description0.03 inch thinSurface mountHigh sensitivity

AbsoluteHigh resonanceTemp compensation

AbsoluteDetachable cableABS braking studies

AbsoluteHigh sensitivityTemp compensation

AbsoluteHigh temperatureTemp compensation

Full scale pressure psia 15 / 50 200 / 500 / 1000 200 / 500 / 1000 / 2000 15 / 50 / 100 15 / 50 / 100 /

200 / 500

Sensitivity mV/psi 13.3 / 4.0 1.5 / 0.6 / 0.3 1.5 / 0.6 / 0.3 / 0.3 15 / 4.5 / 2.25 20 / 6 / 3 / 1.5 / 0.6

Resonance frequency kHz 180 / 320 750 / 1000 / >1000 750 / 1000 / >1000 / >1000 180 / 320 / 500 140 / 240 / 350 /

450 / 900

Non linearity (typ) %FSO 0.2 0.2 0.2 0.15 / 0.1 / 0.1 0.25 / 0.25 / 0.25 / 0.4 / 0.4

Operating temperature ˚C (˚F) -54 to +121 (-65 to +250)

-54 to +121 (-65 to +250)

-54 to +121 (-65 to +250)

-54 to +121 (-65 to +250)

-54 to +260 (-65 to +500)

Burst pressure psi 75 / 250 800 / 2000 / 4000 800 / 2000 / 4000 / 4000 75 / 250 / 400 30 / 100 / 200 /

400 / 1000

Face diameter mm (in) 6.35 (0.25) 3.86 (0.152) 3.86 (0.152) 3.86 (0.152) 3.86 (0.152)

Weight gram 0.08 2.3 2.3 2.3 8.5

Mounting method RTV bond 10-32 UNF-2A 10-32 UNF-2A 10-32 UNF-2A 10-32 UNF-2A

Endevco® miniature piezoresistive pressure transducers from Meggitt Sensing Systems are designed to measure both dynamic and static pressure to a high degree of accuracy. They feature a state-of-the art diaphragm design and incorporation of MEMS sensing elements, manufactured at Meggitt’s own US based MEMS facility, resulting in a range of pressure sensors with an extremely high output signal and high resonant frequency, as well as extraordinary linearity and repeatability, and virtually no hysteresis.

Select models feature user-selectable temperature compensation and high temperature operation to +260°C (+500°F). In addition, the Endevco® range of absolute pressure sensors is available in ranges as low as 0–15 psia and as high as 0–2000 psia, with gage/differential sensor models available in ranges as low as 0–1 psig and as high as 0–20,000 psig. All units are shipped in specially designed electrostatic discharge (ESD) packaging, to reduce the potentially harmful effects of static electricity on critical components, as well as to further support customer in-house ESD control procedures.

Typical applications> Jet airflow fields and inlet pressure

> Hypersonic, transonic and “quiet flow” wind tunnel testing

> Turbulent airflow measurements

> Process control

> Blast testing

> Automotive airbag inflation testing

> Rocket motor analysis

> Vehicle transmission testing

> Hydraulics measurements

Piezoresistive pressure transducers

Endevco® model number 8507C 8510B 8510C 8511A

DescriptionGageHigh sensitivityTemp compensation

GageVent tubeTemp compensation

GageHigh resonanceTemp compensation

RuggedGageHigh pressureTemp compensation

Full scale pressure psig 1 / 2 / 5 / 15 1 / 2 / 5 / 200 / 500 / 2000 15 / 50 / 100 5000 / 10,000 / 20,000

Sensitivity mV/psi 200 / 100 / 60 / 20 200 / 100 / 60 / 1.5 / 0.6 / 0.15 15 / 4.5 / 2.25 0.1 / 0.05 / 0.025

Resonance frequency kHz 55 / 70 / 85 / 130 55 / 70 / 85 / 320 / 500 / 900 180 / 320 / 500 less than 1000

Non linearity (typ) %FSO 1.5 / 1.0 / 0.5 / 0.2 1.0 / 1.0 / 0.5 / 0.25 / 0.25 / 0.25 0.15 / 0.1 / 0.1 1.2 / 2.5 / 2.5


Burst pressure psi 20 / 40 / 100 / 150 25 / 40 / 100 / 1000 / 2500 / 10,000 75 / 250 / 400 20,000 / 30,000 / 40,000

Face diameter mm (in) 2.34 (0.092) 3.86 (0.152) 3.86 (0.152) 8.13 (0.320)

Weight gram 0.3 2.3 2.3 11

Mounting method RTV bond 10-32 UNF-2A 10-32 UNF-2A 3/8-24 UNF-2A

18 19Endevco®—Piezoelectric accelerometersEndevco®—Piezoelectric accelerometers

Meggitt piezoelectric accelerometers are charge mode accelerometers that require use of an external charge amplifier, allowing for reliable operation over wider temperature and amplitude ranges. Piezoelectric accelerometers are popular choices for acceleration, shock and vibration measurements, due to their wide frequency ranges, easy installation, and availability in multiple shapes, weights, sizes and sensitivities. Special purpose piezoelectric accelerometers are also available for flight test, extreme low- and high-temperatures and radiation environments.

Endevco® model number 12M1B 22 23 2220E

DescriptionSurface mountOEMMedical device

Micro-miniature teardrop

Micro-miniature triaxial

Thru-hole mountLightweight

Sensitivity pC/g typical 1.9 0.4 0.4 3.0

Sinusoidal limit g 500 2500 1000 1000

Shock limit g 1000 10,000 10,000 5000

Frequency response ±1 dB Hz 1 to 2000 3 to 12,000 3 to 10,000 (X&Y) / 3 to 12,000 (Z) 1 to 12,000

Min temperature ˚C (˚F) -65 (-85) -73 (-100) -73 (-100) -55 (-67)

Max temperature ˚C (˚F) +150 (+302) +150 (+300) +149 (+300) +260 (+500)

Signal/ground isolation No Yes Yes Yes

Hermetic seal No No No Yes

Weight gram (without cable) 0.12 0.14 0.8 3.1

Dimensions mm (in) 4.57 x 3.81 x 1.4 [0.180 x 0.150 x 0.055]

Ø 3.58 x 2.79 [Ø 0.141 x 0.110]

7.62 x 6.35 x 5.08[0.30 x 0.25 x 0.20]

Ø 9.53 x 5.8[Ø 0.375 x 0.23]

Mounting method SMT Adhesive Adhesive Screw

Cable included No 3095A-120 3095A-120 3053V-120

Piezoelectric accelerometers

Typical applications> Aircraft flight testing

> Ground vibration testing


> Product testing

> Quality assurance

> Research and development

> Test and measurement

> Turbine maintenance

> Engine testing

> Medical devices (non-critical)

> OEM design and test applications

Endevco® model 12M familyPiezoelectric accelerometerStructural monitoring

Smart Structures, a leader in wireless advanced systems that test and monitor the health of highways, bridges, peers, high-rise buildings, and power-plants chose to use Endevco®’s 12M family of accelerometers due to their combination of small form factor, broad frequency response, high shock limit, and high charge output. “We worked very closely with Endevco® for two years as we refined our system design and manufacturing process,” stated Tom Chiarella, President of Smart Structures, Inc. “Their technical expertise and dedication to helping us succeed were critical elements in advancing key functionality in our product.”

12M1B features> Surface mount piezoelectric accelerometer> 1.9 pC/g sensitivity> 1 Hz to 2000 Hz frequency response> OEM / medical applications

20 21Endevco®—Piezoelectric accelerometers Endevco®—Piezoelectric accelerometers

Endevco® model 2220EThe Endevco® model 2220E is a lightweight, miniature high-temperature piezoelectric accelerometer to +260°C (+500°F), ideal for the high-reliability vibration testing of aircraft APUs, hydraulic systems and jet and turboprop aircraft engines. The centrally located thru-bolt mounting of this hermetically sealed transducer provides 360° cable and connector orientation for a consistently flat mounting surface.

> 3.0 pC/g sensitivity> 1 Hz to 12,000 Hz frequency response> High temperature (+260°C)> Hermetically sealed> Lightweight (3.1 grams)> 360° cable orientation

Endevco® model number 2226C 2228C 2230EM1 2248M1 2270

Description LightweightMiniature

TriaxialGround isolated

TriaxialHigh temperature

Radiation testedHigh temperatureLightweight

Back-to-back calibration

Sensitivity pC/g typical 2.8 2.8 3 3.0 2.2

Sinusoidal limit g 1000 1000 1000 500 1000

Shock limit g 2000 2000 2000 3000 15,000

Frequency response ±1 dB Hz 0.1–7000 0.1–6000 1-10,000 1–80002–20,000 (for accelerometers up to 35 grams)

Min temperature ˚C (˚F) -55 (-67) -55 (-67) -55 (-67) -54 (-65) -54 (-65)

Max temperature ˚C (˚F) +177 (+350) +177 (+350) +260 (+500) +482 (+900) +177 (+350)

Signal/ground isolation No Yes No No Yes

Hermetic seal No No Yes Yes No

Weight gram (without cable) 2.8 15 22.5 13 40

Dimensions mm (in) 9.53 hex x 5.8 [0.375 hex x 0.19]

18.72 x 18.72 x 11.68 [0.737 x 0.737 x 0.460]

17.14 x 11.68 x 15.24 [0.675 x 0.460 x 0.60]

11.09 x 11.09 x 16.51 [0.437 x 0.437 x 0.650]

15.88 hex x 28.4 [0.625 hex x 1.12]

Mounting method Adhesive Screw Screw Stud Stud

Cable included 3060D-120 3060D-120 3053V-120 3075M6-120 3090C-120

Endevco® model number 2221F 2222C 2222D 2224C 2225 / 2225M5A

Description Thru-hole mount360˚ cable orientation Miniature teardrop Miniature teardrop

Hermetic General purpose High g shock

Sensitivity pC/g typical 10 1.4 1.1 12 0.75 / 0.025

Sinusoidal limit g 1000 1000 1000 1000 10,000 / 10,000

Shock limit g 3000 10,000 10,000 2000 20,000 / 100,000

Frequency response ±1 dB Hz 0.1–12,000 1–10,000 0.1–12,000 0.1–10,000 1–10,000

Min temperature ˚C (˚F) -55 (-67) -73 (-100) -55 (-67) -55 (-67) -55 (-67) / -18 (0)

Max temperature ˚C (˚F) +260 (+500) +177 (+350) +175 (+347) +177 (+350) +177 (+350) / +66 (+150)

Signal/ground isolation Yes Yes No No No

Hermetic seal Yes No Yes No No

Weight gram (without cable) 11 0.5 1.0 16 13

Dimensions mm (in) Ø 15.24 x 8.9[Ø 0.60 x 0.35]

Ø 6.35 x 3.3[Ø 0.25 x 0.13]

Ø 6.35 x 4.1[Ø 0.25 x 0.16]

14.2 hex x 13.7 [0.56 hex x 0.54]

14.2 hex x 13.7 [0.56 hex x 0.54]

Mounting method Screw Adhesive Adhesive Stud Stud

Cable included 3090C-120 3090C-120 3053V-120 3090C-120 3090C-120 / 3060D-120

22 23Endevco®—Piezoelectric accelerometersEndevco®—Piezoelectric accelerometers

Endevco® model number 2276 6222S 6233C 6237M70

Description Radiation testedHigh temp

ARINC mountDifferential output

ARINC mountHigh tempDifferential output

Very high temperature

Sensitivity pC/g typical 10 20 / 50 / 100 10 / 50 / 100 10

Sinusoidal limit g 500 2000 / 1000 / 500 1000 / 1000 / 500 500

Shock limit g 3000 4000 / 2000 / 1000 2000 / 2000 / 1000 2000

Frequency response ±1 dB Hz 1–7000 1–12,000 / 1–9000 / 1–9000 1–8000 / 0.1–5000 / 0.1–3000 1–5000



Signal/ground isolation No Yes Yes Yes

Hermetic seal Yes Yes Yes No

Weight gram (without cable) 30 91 75 / 110 / 110 30


41.4 x 30.2 x 20.3 [1.63 x 1.19 x 0.80]

41.6 x 30.2 x 25.4 / 81.8 / 38.1[1.64 x 1.19 x 1.00 / 1.25 / 1.50]

24.4 x 14.2 x 14.2[0.96 x 0.56 x 0.56]

Mounting method Stud Screw Screw Screw

Cable included 3075M6-120 No No Integral

Endevco® model 6233CThe Endevco® model 6233C is a rugged, very high-temperature piezoelectric charge mode accelerometer, designed for continuous operation to +485°C (+900°F) with long Mean Time Between Failures (MTBF). It is ideal for the high-precision vibration monitoring of high-temperature jet and turboprop engines, helicopter and rotorcraft HUMs, gas turbines and nuclear power plant machinery and equipment. As a self-generating device, the accelerometer requires no external power source for operation. At such high temperatures, however, use of a charge amplifier or remote charge converter than can accept a 100 kΩ source resistance is required.

> 10, 50 and 100 pC/g sensitivities available> Balanced differential output> Ground isolated> Hermetically sealed> Industry standard three-point ARINC mounting> Rugged 2-pin 7/16-24 UNS 2A threaded receptacle

Endevco® model number 2271A 2271AM20 2273AM1 2273AM20

Description Cryogenic Cryogenic Radiation tested10-32 side connector

Radiation tested10-32 top connector

Sensitivity pC/g typical 11.5 11.5 10 10

Sinusoidal limit g 1000 1000 500 500

Shock limit g 10,000 10,000 3000 3000

Frequency response ±1 dB Hz 1–8000 1-8000 1-7000 1-7000



Signal/ground isolation Yes Yes Yes Yes

Hermetic seal Yes Yes Yes Yes

Weight gram (without cable) 27 27 32 34


15.9 hex x 24.9 [0.625 hex x 0.98]

15.9 hex x 26.9 [0.625 hex x 1.06]

15.9 hex x 34.5 [0.625 hex x 1.36]

Mounting method Stud Stud Stud Stud

Cable included 3090DV-120 3090C-120 3075M6-120 3075M6-120

24 25Endevco®—Piezoelectric accelerometers Endevco®—Piezoelectric pressure sensors

Endevco® model number 7240C 7703A 7704A

Description Very high frequency General purposeRadiation tested

General purposeRadiation tested

Sensitivity pC/g, typical 3.0 50 / 100 / 200 / 300 / 1000 50 / 100

Sinusoidal limit g 1000 2000 / 1000 / 850 / 675 / 500 2000 / 1000

Shock limit g 5000 10,000 / 5000 / 2000 / 1600 / 1000 10,000 / 5000

Frequency response ±1 dB Hz 1–20,000 1–9000 / 1–8000 / 1-6000 / 1-5000 / 1-3000 1–9000 / 1–8000

Min temperature ˚C (˚F) -55 (-67) -55 (-67) -55 (-67)

Max temperature ˚C (˚F) +260 (+500) +288 (+550) +288 (+550)

Signal/ground isolation No Yes Yes

Hermetic seal Yes Yes Yes

Weight gram (without cable) 4.8 25 / 29 / 62 / 70 / 120 25 / 29


for -50 / -100 16.0 hex x 19.8 [0.63 hex x 0.78]for -200 / -300 / -400 25.4 hex x 23.1 [1.0 x 0.91]

16.0 hex x 21.1 [0.63 hex x 0.83]

Mounting method Stud Stud Stud

Cable included 3053V-120 3090C-120 3090C-120

Endevco® model number 522M17 522M25A

DescriptionHigh temperatureUse with single-ended charge amplifiers

Differential output24 inch length

Sensitivity pC/psi, typical 12 17

Resonant frequency kHz 45 20

Vibration sensitivity pC/g 0.05 0.05

Max temperature sensor ˚C (˚F) +538 (+1000) +530 (+986)

Max temperature connector ˚C (˚F) +177 (+351) +260 (+500)

Operating static pressure psi 2500 400

Dynamic range psi 500 20

Weight gram (without cable) 25 250 (including cable)

Exit type/connector 10-32 EN2997 3-pin

Endevco® model 7703AThe Endevco® model 7703A series is a high-temperature radiation tested piezoelectric accelerometer family, designed for general vibration measurements on structures and objects, particularly within nuclear environments. The model is available in multiple sensitivities. It features a 10-32 side connector and highly stable shear mode construction, offering low base strain sensitivity, high resonance frequency, insensitivity to thermal transients and excellent output stability over time. A 10-foot cable assembly and 10-32 mounting stud are supplied for easy installation and error-free operation.

Both 50 and 100 pC/g series ranges are well-suited for nuclear environments because of their high sensitivity and 108 Rad Integrated Gamma Flux radiation rating (Integrated Neutron Flux of up to 1010 N/cm2), with triaxial mounting capabilities for vibration measurements across three orthogonal axes (via optional triaxial mounting block model 2950A). The 1000 pC/g version is ideal for high-sensitivity, high-output applications where vibration inputs are low. Additional applications include modal measurements on larger structures and objects, engine testing, oil and gas pipeline monitoring, nuclear power plant pipeline and valve vibration monitoring, as well as aerospace metallurgy and automotive metrology.

> 50, 100, 200, 300 and 1000 pC/g sensitivities available> High temperature (+288°C)> Tested for radiation environments up to 108 rad> Ground isolated> Hermetically sealed

Piezoelectric pressure sensors

The Endevco® model 522M series is a family of piezoelectric pressure transducers, expressly designed for the high-reliability dynamic measurement of pressure fluctuations, even in extreme temperatures of up to +1000°F (continuous) and up to +1200°F intermittent and within high static pressure environments.

Featuring an all-welded Inconel® construction for maximum temperature survivability, the Endevco® model 522M series features an integral metal-sheathed hardline cable of triaxial construction, with 10-32 coaxial receptacle that offers output signal-to-case isolation. The electrical design of these sensors is fully optimized for use with both single-ended and differential amplifiers. Typical applications include combustion monitoring, high pressure steam, propulsion systems testing, test cell environmental pressures, and gas turbine testing. ATEX approved models are also available.

26 27Endevco®—Isotron® accelerometersEndevco®—Isotron® accelerometers

Isotron® accelerometers

Endevco® Isotron® accelerometers, also known as IEPE-type or voltage mode, feature an integral electronic impedance converter, eliminating the need for an external charge amplifier. They can drive long cables with minimal distortion and noise pick-up. Isotron® electronics are compatible with industry standard IEPE current sources built into most industry standard data acquisition systems.

These accelerometers are available with a wide selection of ranges, sizes and shapes. Some units are also available with iTEDS onboard memory storage (per IEEE 1451.4-2004), facilitating their use within larger channel count applications. Special version Isotron® accelerometers, also pioneered by Endevco®, include lightweight versions with a 30 kHz bandwidth, high sensitivity units for seismic measurements, and ultra low-noise accelerometers for measuring whole body motion.

Endevco® model number 25A 25B 27A11 / A12 27AM1

Description World’s smallest Isotron® World’s smallest Isotron® Lightweight teardropiTEDS Lightweight teardrop

Sensitivity mV/g typical 5 5 10 / 100 10 / 100

Range g ± 740 ± 740 ± 500 / ± 50 ± 500 / ± 50

Shock limit g 2000 2000 5000 5000

Frequency response ±1 dB Hz 1–12,000 1–12,000 2–10,000 / 3–10,000 2–10,000 / 3–10,000

Broadband noise (μg rms) 7000 7000 2000 / 400 2000 / 400



Signal/ground isolation Yes Yes No No

Hermetic seal No No Yes Yes

Weight gram (without cable) 0.2 0.2 0.8 / 1.0 0.8 / 1.0

Dimensions mm (in) Ø 0.381 x 2.54 [Ø 0.15 x 0.10]

Ø 0.381 x 2.74 [Ø 0.15 x 0.108]

Ø 6.35 x 6.6 [Ø 0.25 x 0.26]

Ø 6.35 x 4.8 [Ø 0.25 x 0.19]

Mounting method Adhesive Adhesive Adhesive Adhesive

Cable included 3024-120 3006-120 (attached to accelerometer) 3053VM1-120 3053VM1-120

Typical applications> Aircraft flight testing

> Ground vibration testing


> Product testing

> Quality assurance



> Heavy machinery maintenance

> Engine testing

> OEM design and test applications

Helicopter health and usage monitoring systemsMeggitt Sensing Systems has played a major role in the successful incorporation of piezoelectric accelerometers into health and usage monitoring systems (HUMS) and their associated helicopter and rotor craft structural monitoring programs, as part of a cost-effective predictive maintenance strategy. High-output, ground isolated, low-noise Endevco® piezoelectric HUMS accelerometers are often specified to effectively measure the low-frequency phase and vibration levels found within rotor-track and balance (RTB) applications. In addition, high resonance frequency models offer linear response to 10 kHz for rotating part diagnostics, gearbox bearing assessments and shaft monitoring. All Endevco® piezoelectric HUMS accelerometers feature low base strain sensitivity, a reliable hermetic connector and integral cable, all essential for use in harsh environments, with thru-bolt designs for easy installation within space constrained areas.

28 29Endevco®—Isotron® accelerometers Endevco®—Isotron® accelerometers

Endevco® model 65HTThe Endevco® model 65HT triaxial accelerometer is a miniature, high-temperature device packaged in a 10-mm cube of welded titanium construction and weighs only five grams. Using the latest technology in high-temperature components and processes, its micro-electronic circuits are designed and built specifically to operate up to +175°C. It is the ideal sensor for vehicle testing, aircraft and automotive engine testing, and high temperature product testing.

> Triaxial, low impedance output> 0.5, 1.0 and 10.0 mV/g sensitivities available> High temperature (+175°C)> High shock limit, overload-protected> Small size (10 mm cube)> Lightweight (5 grams)

Endevco® model 35AMiniature triaxial Isotron® accelerometerVibration analysis

Researchers throughout the world have called upon Endevco® to solve their most basic and most challenging measurement needs. At Claremont McKenna College in Claremont, California researcher Tyler Benner selected Endevco®’s model 35A to study the induced vibrations in an olympic recurve bow to optimize the tiller setting. In the study Tyler noted “The 35A’s 5 mv/g output and scant 1.1 gram weight was the perfect accelerometer for this study.” The miniature size of the 35A also allowed them to study the natural frequencies of the bow materials and how this could impact both material selection and design.

> Ultra-miniature triaxial accelerometer> 5 mV/g sensitivity, ±1000 g range> 1 Hz to 12,000 Hz frequency response> Very lightweight (1.1 grams)

Endevco® model number 66A50 / A11 / A12 67 86 87

Description TriaxialiTEDS

TriaxialHigh temperatureHigh sensitivity

Ultra low frequency seismic measurements

Very low frequency seismic measurements

Sensitivity mV/g, typical 5 / 10 / 100 10 / 100 10,000 1000 / 10,000

Linear range g ± 1000 / ± 500 / ± 50 ± 500 / ± 50 ± 0.5 ± 5 / ± 0.5

Shock limit g 10,000 5000 250 400

Frequency response ±1 dB Hz 0.4–14,000 / 0.4–14,000 / 1.5–10,000 0.15–8000 / 0.5–8000 0.005–100 0.015–380 / 0.05–380

Broadband noise (μg rms) 6000 / 800 / 400 1400 / 450 0.1 1.5 / 0.4



Signal/ground isolation No No Yes Yes

Hermetic seal Yes Yes Yes Yes

Weight gram (without cable) 5 14 771 170

Dimensions mm (in) 10 x 10 x 13 [0.39 x 0.39 x 0.52]

14 cube [0.58 cube]

Ø 64.8 x 55.5 [Ø 2.55 x 2.18]

Ø 28.6 x 37.3 [Ø 1.125 x 1.47]

Mounting method Stud Stud Stud Stud

Cable included 3027AM3-120 3027AVM13-843027AM3-36 6923M9-120 No

Endevco® model number 35A 61C12 / C13 65 65HT

Description Smallest triaxial Isotron® EZ mountiTEDS

TriaxialMiniature

TriaxialHigh temperature

Sensitivity mV/g, typical 5 100 / 1000 10 / 100 0.5 / 1 / 10

Linear range g ± 1000 ± 50 / ± 5 ± 500 / ± 50 ± 10,000 / ± 5000 / ± 500

Shock limit g 2000 5000 10,000 15,000 / 10,000 / 10,000

Frequency response ±1 dB Hz 1–12,000 1–8000 (adhesive) 0.4–10,000 / 1.5–6000 3–8000

Broadband noise (μg rms) 7000 150 / 50 800 / 400 8000 / 4000 / 1400



Signal/ground isolation No Yes No No

Hermetic seal No Yes Yes Yes

Weight gram (without cable) 1.1 13 5 5

Dimensions mm (in) 6.35 x 6.35 x 7.62 [0.25 x 0.25 x 0.30]

14.2 cube [0.56 cube]

10 cube [0.39 cube]

10 cube [0.39 cube]

Mounting method Adhesive Adhesive & EZ mount Stud Stud

Cable included 3027AM5-120 3061A-120 3027AM3-120 3027AVM13-843027AM3-36

30 31Endevco®—Isotron® accelerometersEndevco®—Isotron® accelerometers

Endevco® model number 256 256HX 752A12 / A13 2250A 2250AM1

Description LightweightGeneral purpose

LightweightGeneral purpose

CompactiTEDS

Small teardropWide bandwidthRemovable cable

Small teardropWide bandwidthSolder pins

Sensitivity mV/g, typical 10 / 100 10 / 100 100 / 1000 10 10

Range g ± 500 / ± 50 ± 500 / ± 50 ± 50 / ± 5 ± 500 ± 500

Shock limit g 2000 2000 5000 2000 2000

Frequency response ±1 dB Hz 1–9000 1–10,000 0.05–10,000 / 0.3–10,000 2–15,000 2–15,000

Broadband noise (μg rms) 1000 / 300 1000 / 300 150 / 50 1500 1500

Min temperature ˚C (˚F) -55 (-67) -55 (-67) -20 (-4) -55 (-67) -55 (-67)

Max temperature ˚C (˚F) +125 (+257) +125 (+257) +85 (+185) +125 (+257) +125 (+257)

Signal/ground isolation Yes Yes Yes Yes Yes

Hermetic seal Yes Yes Yes No No

Weight gram (without cable) 3.5 4.0 13 0.4 0.4

Dimensions mm (in) Ø 11.2 x 6.8 [Ø 0.44 x 0.27]

11.2 hex x 9.4[0.44 hex x 0.37]

14.4 hex x 17.3[0.57 hex x 0.68]

Ø 5.84 x 4.06 [Ø 0.23 x 0.16]

Ø 5.84 x 4.06 [Ø 0.23 x 0.16]

Mounting method Adhesive Stud Stud Adhesive Adhesive

Cable included 3061A-120 3061A-120 3061A-120 3006-120 3024-120

Endevco® model number 2255B 2258A 5220B-100 7250A

Description High g shockFar field

TriaxialThree 10-32 connectors

Industrial general purposeIsolated Faraday shield

Thru-hole mountLightweightWide bandwidth

Sensitivity mV/g, typical 0.1 / 1 10 / 100 100 2 / 10

Range g ± 50,000 / ± 5000 ± 500 / ± 50 ± 80 ± 2500 / ± 500

Shock limit g 50,000 2000 5000 10,000

Frequency response ±1 dB Hz 2–20,000 / 0.5–20,000 1–7000 1–9000 3–20,000 / 4–20,000

Broadband noise (μg rms) 0.5 / 0.05 1000 / 300 700 10,000 / 2000



Signal/ground isolation Yes Yes Yes Yes

Hermetic seal No Yes Yes Yes

Weight gram (without cable) 2 15 90 1.8


18.7 x 18.7 x 11.7 [0.74 x 0.74 x 0.46]

22.2 hex x 53.3 [0.875 hex x 0.75]

Ø 9.78 x 5.8[Ø 0.385 x 0.23]

Mounting method Stud Screw Stud Screw

Cable included 3024-120 3061A-120 No 3091F-120

Endevco® model 5220BThe Endevco® model 5220B-100 is an industrial accelerometer designed specifically for vibration measurement in the rugged environments of plant machinery. The 5220B-100 has a top integral two-pin receptacle MS3102-10SL-4P. The system transmits its low impedance voltage output through the same pin or twisted pair cable that supplies the required constant current power.

> Industrial general purpose accelerometer> 100 mV/g sensitivity> Hermetically sealed> Ground isolated> Isolated Faraday shield

32 33Endevco®—Isotron® accelerometers Endevco®—Isotron® accelerometers

Endevco® model number 7250AM1 7251A 7253C

DescriptionThru-hole mountWide bandwidthSolder pins

Thru-hole mountGeneral purpose

TriaxialWide bandwidthLightweight

Sensitivity mV/g, typical 2 / 10 10 / 100 / 500 10

Linear range g ± 2500 / ± 500 ± 500 / ± 50 / ± 10 ± 500

Shock limit g 10,000 5000 2000

Frequency response ± 1dB Hz 3–20,000 / 4–20,000 2–10,000 2–15,000

Broadband noise (μg rms) 10,000 / 20,000 1000 / 250 / 150 2000



Signal/ground isolation Yes Yes Yes

Hermetic seal Yes Yes No

Weight gram (without cable) 1.8 10.5 3.6

Dimensions mm (in) Ø 9.78 x 5.8[Ø 0.385 x 0.23]

Ø 15.2 x 8.9[Ø 0.60 x 0.35]

15.2 x 15.2 x 7.1 [0.60 x 0.60 x 0.28]

Mounting method Screw Screw Screw

Cable included 3091F-120 3061A-120 3027AM3-120

Endevco® model number 7255A 7259B

Description

Near-fieldHigh shockBuilt in mech filterSolder terminals

Very high frequencyLightweight

Sensitivity mV/g, typical 0.1 / 1 10 / 25 / 100

Linear range g ± 50,000 / ± 5000 ± 500 / ± 200 / ± 50

Shock limit g 300,000 / 25,000 10,000 / 5000 / 2000

Frequency response ±1 dB Hz 3–10,000 (± 3 dB) 5–10,000

Broadband noise (μg rms) 0.5 / 0.05 1500 / 1500 / 200

Min temperature ˚C (˚F) -18 (0) -55 (-67)

Max temperature ˚C (˚F) +66 (+150) +125 (+257)

Signal/ground isolation Yes Yes (with isolator)

Hermetic seal Yes Yes

Weight gram (without cable) 5.0 4.4

Dimensions mm (in) 9.52 hex x 21.3[0.375 hex x 0.84]

9.53 hex x 11.68[0.375 hex x 0.46]

Mounting method Stud Stud

Cable included 3024-120 3053VM1-120

Endevco® model 7251AThe Endevco® model 7251A series is a family of small, lightweight, hermetically sealed piezoelectric accelerometers with integral electronics. The centrally located thru-bolt mounting hole of this series provides both 360° cable and connector orientation, allowing for a flat mounting surface, even when the sensor is not fully perpendicular, for ease of use in a variety of applications.

> 10, 100, and 500 mV/g sensitivities available on standard model> High temperature up to +150°C option available> TEDS option available> Ground isolated> Hermetically sealed> Lightweight (10.5 grams standard model)> 360° cable orientation

34 35Endevco®—MicrophonesEndevco®—Microphones

Endevco® model number 2510 2510M4A EM40AD EM40AO EM40BD

DescriptionHigh intensity soundHigh temperatureVibration compensated

High intensity soundHigh temperatureVibration compensated

1/2”PrepolarizedCondenser

1/2”Wide frequencyCondenser


Type Pressure Pressure Pressure Pressure Pressure

Sensitivity mV/Pa ± 3 dB @ 250 Hz 0.16 pC/pascal 0.16 pC/pascal 50 12.5 1.6

Frequency range Hz 2–4000 2–4000 6.3–10,000 3.15–20,000 10–70,000

Temperature range ˚C (˚F) -55 to +260(-67 to +500)

-55 to +260(-67 to +500)

-40 to +120(-40 to +248)

-40 to +150(-40 to +302)

-40 to +120(-40 to +248)

Dynamic range dB 100–180 100–180 17–146 27–160 45–174

Diameter mm (in) 20.70 (0.815) 20.70 (0.815) 12.7 (1/2) 12.7 (1/2) 6.35 (1/4)

Cable included 3090C-120 3090C-120 No No No

Endevco®’s piezoelectric microphones measure high intensity acoustic noise and very low pressure fluctuations over a frequency range of 1 Hz to 10 kHz with a measurement range of 100 to >180 dB SPL. These hermetically sealed microphones are designed for operation in harsh environments and operate over a temperature range of -55°C to +260°C (-67°F to +500°F). Other outstanding features include insensitivity to altitude changes and ambient vibration.

Endevco® prepolarized condenser measurement microphones, available in 1⁄8”, ¼”, and ½” diameters, are offered in free-field, pressure, low-cost array and random incidence types and may be used to meet IEC and ANSI standards. Array microphones offer a lower overall per channel measurement cost and are directly compatible with Isotron® (IEPE-type) signal conditioning. They may be used as drop-in replacements within existing accelerometer test system set-ups for as-needed precision noise measurements. Models may be purchased as stand-alone units, or in a pre-calibrated microphone and low-noise preamplifier combination with iTEDS on-board memory storage capabilities (per IEEE 1451.4-2004), facilitating their use within larger channel count applications.

Microphones

Typical applications> NVH testing

> Cabin noise analysis

> Pass-by noise testing

> Environmental noise analysis

> Building noise studies

> Acoustic chamber testing

> Appliance noise evaluation

> Wind tunnel and aerodynamics testing

Endevco® model number EM40DD EM40AE EM40AM EM40BE EM40AQ

Description1/8”PrepolarizedCondenser


1/2”Wide frequencyCondenser



Type Pressure Free-field Free-field Free-field Random incidence

Sensitivity mV/Pa ± 3 dB @ 250 Hz 0.7 50 12.5 4 50

Frequency range Hz 6.5–140,000 3.15–20,000 3.15–40,000 10–100,000 3.16–16,000

Temperature range ˚C (˚F) -40 to +120(-40 to +248)

-40 to +150(-40 to +302)

-10 to +50(14 to +122)

-40 to +150(-40 to +302)

-40 to +150(-40 to +302)

Dynamic range dB 50–184 15–146 20–160 40–168 17–146

Diameter mm (in) 3.16 (1/8) 12.7 (1/2) 12.7 (1/2) 6.35 (1/4) 12.7 (1/2)

Cable included No No No No No

36 37Endevco®—Microphones Endevco®— Microphones

Endevco® model number EM46AE EM46BE EM46AQ

Description EM40AE microphone & EM26CA preamp with iTEDS

EM40BE microphone & EM26CB preamp with iTEDS

EM40AQ microphone & EM26CA preamp with iTEDS

Type Free-field Free-field Random incidence

Sensitivity mV/Pa ± 3 dB @ 250 Hz 50 4 50

Frequency range Hz 3.15–20,000 10–100,000 3.15–12,500



Dynamic range dbA to dB 17–134 40–168 16–138

Length mm (in) 84 (3.31) 53 (2.09) 84 (3.31)

Weight oz (g) 1.16 (33) 0.28 (8) 1.23 (35)

Diameter mm (in) 12.7 (1/2) 6.35 (1/4) 12.7 (1/2)

Connector BNC 10-32 BNC

Endevco® model number EM46AD EM46AO EM46BD

Description EM40AD microphone & EM26CA preamp with iTEDS

EM40A0 microphone & EM26CA preamp with iTEDS

EM40BD microphone & EM26CB preamp with iTEDS

Type Pressure Pressure Pressure

Sensitivity mV/Pa ± 3 dB @ 250 Hz 50 12.5 1.6

Frequency range Hz 3.15–10,000 3.15–20,000 10–70,000



Dynamic range dbA to dB 16–138 27–147 45–174

Length mm (in) 84 (3.31) 80.3 (3.16) 53 (2.09)

Weight oz (g) 1.23 (35) 1.16 (33) 0.28 (8)

Diameter mm (in) 12.7 (1/2) 12.7 (1/2) 6.35 (1/4)

Connector BNC BNC 10-32

Microphone setsEndevco® EM46 series is a family of microphones and preamplifiers, pre-assembled and calibrated as a single unit, with the incorporation of iTEDS. These combination units have been carefully selected to obtain the best possible properties and reliability, thus optimizing workflow for the user and minimizing typical handling errors. The units are assembled in a dust-free environment to avoid contamination of the interface between the microphone and preamplifier and have been sealed with a label. The label can be removed and the kit dismantled, if desired by the user.

For measurement platforms that support intelligent transducers, according to IEEE 1451.4 (iTEDS), microphones may be simply plugged in, in order to identify their specific properties, types and calibration data—a feature especially appreciated by multi-channel users. All EM46 series units are delivered with calibration charts including sensitivity values and frequency response curves for the complete kit. The sensitivity value can therefore be used directly within the system setup.

> Preassembled kit, consisting of a high-precision microphone cartridge and iTEDS-enabled preamplifier> Constructed of highly durable stainless steel> Calibrated as a complete system> Repairable diaphragm

Environmental noise analysisMeasurement microphones are used in environmental noise analysis to study sounds from sources such as airports, highways and construction zones. This analysis can give a better understanding of the sound levels experienced in these areas, allowing for the necessary adjustments to be made to comply with existing regulations and legislation.

38 39Endevco®—MicrophonesEndevco®—Microphones

Endevco® model number EM26CA EM26CF EM26CB EM26CS

Description 1/2” microphone preamplifier

1/2” microphone preamplifier with gain and filter settings

1/4” microphone preamplifier

1/4” microphone preamplifierSmall size

Power supply mA 2–20 4–20 2–20 2–20

Noise A-weighted μV rms < 2.5 10, typical < 2.5 < 2.5

Frequency range Hz 2–200,000 2.5–100,000 2–200,000 2–200,000



Output voltage maximum V ± 8 ± 5 ± 8 ± 8

Input impedance GΩ 20 20 20 20

Output impedance Ω < 50 < 50 < 50 < 50

Gain, typical dB -0.25 -0.25 -0.25 -0.45

Length mm (in) 73 (2.87) 93 (3.66) 50 (1.97) 29.5 (1.16)

Weight oz (g) 0.92 (26) 1.06 (30) 0.28 (8) 0.12 (3.5)

Diameter mm (in) 12.7 (1/2) 12.7 (1/2) 6.35 (1/4) 6.35 (1/4)

Connector BNC BNC Microdot 10-32 Microdot 10-32

Endevco® model number EM40PH EM40PL EM40PS

DescriptionLow-cost general purpose microphone with integral Isotron® amplifier and iTEDS

Low-cost general purpose microphone with integral Isotron® amplifier and iTEDS

Low-profileSurface microphone

Power supply mA 2–20 2–20 2–10

Type Array Array Surface

Sensitivity mV/Pa ± 3 dB @ 250 Hz 50 10 5

Frequency range Hz 10–20,000 10–20,000 20–20,000

Min temperature ˚C (˚F) -10 (+14) -10 (+14) -20 (-4)


Dynamic range dbA to dB < 32 to 135 < 32 to 150 < 32 to 136

Output impedance Ω < 50 < 50 < 50

Diameter mm (in) 7 (0.28) 7 (0.28) 13.2 (0.52) w/o fairing

Connector SMB SMB 10-32

Isotron® preamplifiers for prepolarized microphonesOptimized for use with prepolarized condenser microphones, Endevco® preamplifiers are delivered with a built-in iTEDS chip, and can be programmed as a single unit, pre-fitted with a microphone. All preamplifiers have a stainless steel casing for maximum strength and durability.

Low-cost array and low-profile surface microphonesSpecial microphones are often required for testing conditions in which there are particular requirements surrounding the methods of measurements and configurations. Surface microphones are used for measurements on planar and curved surfaces. A typical application includes measurements of wind-induced noise on ground and airborne vehicles. Array microphones are used in applications where concurrent measurements are required at several points in an array. Typical applications include sound field analysis and sound power analysis.

> Low-cost pre-polarized array microphones designed for multi-channel acoustic measurements> Low-profile surface microphone, ideal for measuring wind-induced noise on ground and airborne vehicles> Build in iTEDS capability

40 41Endevco®—ElectronicsEndevco®—Electronics

Endevco® model number 2775B 6634C 4430A 4416B 4830A

Description

PE / Isotron® signal conditionerAC / DC / Servo outputs

Rotating machineryVibration amplifierSingle ended, filters, alarm relays

Ultra low noise PE / Isotron® / bridge signal conditioner

Portable Isotron® power supply and signal conditioner

Handheld accelerometer simulator

Input PE / Isotron® / RCC PE / Isotron® / Velocity coil PE / Isotron® Isotron® Output only

Channels 1 or 6 / Rack 1 or 6 / Rack 1 or 10 / Rack 1 1

Gain 0.0025–10,000 Selectable 1–1000 1 / 10 N/A

Display Meter DPM DPM N/A LCD

Broadband noise rms 1 (RTO) 1 1 100 μV RMS (RTO) 2

Lower cutoff freq -3 dB Hz 0.16 2 0 0.3 1

Upper cutoff freq -3 dB Hz 120,000 20,000 100,000 40,000 10,000

Power 100–240 VAC 90–240 VAC From 4961 / 4960A Battery / AC Battery / AC

Type of control Manual / RS-232 Manual / RS-232 Manual / GPIB Manual Manual

Electronics

Endevco® offers a comprehensive family of high performance electronic instruments from simple battery operated signal conditioners to computer controlled laboratory quality instruments that measure vibration, shock and pressure. Endevco® electronic instruments support piezoelectric (charge-mode), variable capacitance, Isotron® (voltage-mode) and piezoresistive sensors. The models 133, 136 and 2775B feature an RS-232 interface and can be controlled by Endevco®’s optional software (35933A).

Typical applications> Aerospace and defense

> Automotive and off-highway

> Product testing

> Quality assurance



Endevco® model number 2680MX 2685MX 2771C 2777A

Description PE charge amp for airborne applications

Isotron® signal conditioner for airborne applications

Ultra low noise remote charge convertor

Differential remote charge convertorLow noiseRuggedized

Input PE Isotron® PE DIFF PE

Channels 1 1 1 1

Gain 0.1–100 0.1–100 0.1 / 1 / 10 2 / 10 mV/Pc

Broadband noise rms 1.5 1.5 5 / 30 / 50 μV 1 / 5 (RTO)

Lower cutoff freq -3 dB Hz 3 0.7 0.4 / 0.4 / 2 5.73

Upper cutoff freq -3 dB Hz Selectable Selectable 8 / 30 / 50,000 (± 5%) 17,500

Power 20-32 VDC 20-32 VDC Constant current 22–31 VDC

42 43Endevco®—Electronics Endevco®—Electronics

Endevco® model number 433 436 482B 428

DescriptionPE / Isotron® signal conditionerRack mounted card

DC differential voltage amplifierRack mounted card

Isotron® signal conditioneriTEDS capabilitiesRack mounted card

PE / Isotron® signal conditionerIsolated front endRack mounted card

Input PE / Isotron® PR / VC Isotron® / RCC PE / Isotron®

Channels 3 or 48 / Rack 3 or 48 / Rack 8 or 128 / Rack 2 or 32 / Rack

Gain 0–1000 10–1000 0–100 0–10,000

Broadband noise rms 0.4 5 15 0.01

Lower cutoff freq -3 dB Hz 0.1 DC 12 0.5

Upper cutoff freq -3 dB Hz 100,000 100,000 100,000 120,000

Power DC DC DC DC

Type of control RS-232 / Ethernet RS-232 / Ethernet RS-232 / Ethernet RS-232 / Ethernet

Endevco® model number 133 126 136 2793

DescriptionGeneral purposePE / Isotron® signal conditioner

Low cost bridge amplifierAuto zero

General purpose differential voltage amplifierAuto zero

Standard rack mount PE / Isotron® signal conditioner with status indicators

Input PE / Isotron® PR / VC PR / VC PE / Isotron® / RCC

Channels 3 or 9 / Rack 3 3 or 9 / Rack 16

Gain 1–1000 0.00-999.9 1–1000 1 / 10

Display DPM N/A DPM N/A

Broadband noise rms 1 (RTO) 1 (RTO) 1 (RTO) 0.4

Lower cutoff freq -3 dB Hz 10 DC DC 1

Upper cutoff freq -3 dB Hz 10,000 10,000 10,000 30,000

Power AC / DC AC / DC AC / DC 100–240 VAC

Type of control Manual / RS-232 Manual Manual / RS-232 Manual

Engine vibration monitoring

Meggitt Sensing Systems precision signal conditioners have been used extensively for supporting accelerometer measurements on space probes and launch vehicles within the US, Europe and Japan, as well as in the laboratory vibration testing of flight components during the qualification process. Our signal conditioners offer exceptional compatibility with existing control systems and support of multiple accelerometer types.

Modular signal conditioning cards for 4990A (OASIS)

Multi-channel signal conditioners

Endevco® model 4990AThe Endevco® model 4990A (OASIS) is a multi-rack based system that interfaces with multiple sensor types by using the 400 series family (below) of modular signal conditioning cards. The modular cards can be used in any combination, giving maximum flexibility to customize any system configuration. The system is ideal for applications requiring anywhere from a few channels to thousands.

Using the OASIS application software, the system can be configured via serial or Ethernet communication. The ability to save and recall previous configurations results in tremendous savings in system setup time.

44 45Endevco®—Calibration equipmentEndevco®—Calibration equipment

Endevco® model number 28959F / FV EM42AA

Description Portable calibration unit Handheld acoustic calibrator

Frequency range Hz 10–10,000 250 ± 0.05%

Acceleration level g 10 max N/A

Inputs PE / Isotron® / PR / Velocity Endevco® microphones

Control Manual Manual

Endevco® model number 2911 2925 2924A

DescriptionHigh frequency shakerBuilt in reference accelerometer

POP (Pneumatically Operated Projectile) shock calibrator

Long stroke shakerSix-inchPk-to-pk displacement

Frequency range Hz 2–40,000 N/A 0–200

Acceleration level g 40 20–10,000 6 max

Inputs N/A N/A N/A

Control Computer controlled or manual Computer controlled or manual Computer controlled or manual

Available exciters

Commercial Automated Accelerometer Calibration System (CAACS)

Calibration equipment

Meggitt Sensing Systems recommends the periodic calibration of sensors and instrumentation to ensure continued performance according to published specifications. For sensors used in severe environments, more frequent calibrations are recommended. Endevco® calibration systems provide an expedited means of performing necessary verifications and are particularly ideal for use in test laboratories where higher quantities of sensors are in use, or where sensors need to be calibrated at the ready.

> Vibration calibration 0.5 Hz to 40 kHz> Shock calibration 20 g to 10,000 g> Calibration of different type of transducers, PE, IEPE, PR, VC, Servo, Velocity> Calibration certificates may be customized by user> Electrical self-calibration> Compliance with ANSI/NCSL Z540-1-1994 and ISO 9000> All calibrations performed are traceable to the National Institute of Standards and Technology (NIST)> Calibration in accordance with ISO/IEC 17025-2005> Controls up to four excitation sources

Portable calibrators

CAACS service plans

Meggitt Sensing Systems offers multiple CAACS service plans, for continued support after initial product warranty expiration. With loaner equipment options and special access to the CAACS technical support team, the plans offer a known cost of ownership and a means of accurately budgeting support requirements, ensuring that any technical issues with the system can receive immediate troubleshooting, and be back up and running with minimal downtime.

46 47Endevco®—Cables Endevco®—Cables

Endevco® designs and manufactures its own cables and connectors specifically for dynamic testing. In these tough and challenging environments, accuracy depends as much on cables and connectors as it does on transducers. Our engineers are well schooled in all the critical parameters in cable and connector designs that can affect signal transmission. As a result, these parameters are carefully optimized in our products to ensure data quality and reliability. When it comes to this kind of in-house custom capability, ordinary commercial cable and transducer companies just don’t compare.

Endevco® also specializes in custom cables, cable lengths, and connectors. Please contact your local Endevco® representative or contact the factory directly to discuss your custom requirements.

Endevco® model number 3003C 3006 3024 3027A 3027AM3 3027AVM13

Connector 1 1.00 UNM 1.20 UNM 10-32 4-pin receptacle 4-pin receptacle 4-pin plug

Connector 2 1-64 UNC-2A 10-32 Pigtail Pigtail 3x BNC 4-pin receptacle

Capacitance pF/ft 25 42 N/A 16 30 16

Center conductor resistance Ω/ft max 42 16 0.066 0.3 0.2 0.3

Conductor size AWG 40 36 28 32 28 28

Jacket material Teflon® Fluorocarbon N/A Silicone PVC Teflon®

Overall diameter in 0.024 0.035 0.055 0.108 0.105 0.105

Bend radius in 0.1 0.120 0.75 0.50 0.850 N/A

Temperature range °C (°F) -73 to +177(-100 to +350)

-50 to +125(-58 to +257)

-184 to +176(-300 to +350)

-100 to +125(-148 to +257)

-55 to +85(-67 to +185)

-100 to +200(-148 to +392)

Low noise Yes No No No No Yes

Endevco® model number 3053V 3053VM1 3060D 3061 3075M6 3090C

Connector 1 M3 M3 10-32 10-32 10-32 10-32

Connector 2 10-32 BNC 10-32 BNC 10-32 10-32

Capacitance pF/ft 32 32 50 28 63 36

Center conductor resistance Ω/ft max 0.5 0.5 0.2 0.5 0.4 0.5

Conductor size AWG 33 33 28 30 0.01 in O.D. 30

Jacket material Extruded Teflon® Extruded PFA Silicone Teflon® 304LSS Teflon®


Bend radius in 0.5 0.50 0.950 0.85 0.75 0.850

Temperature range °C (°F) -258 to +260(-432 to +500)

-55 to +200(-67 to +392)

-73 to +260(-100 to +500)

-100 to +260(-148 to +500)

-184 to +482(-300 to +900)

-258 to +260(-432 to +500)

Low noise Yes Yes Yes No No Yes

Cables

Endevco® model number 3090CM12 3090DV 3091F 3095A 6917B/D 6918M30

Connector 1 10-32 10-32 6-40 UNF-2B 1-64 7/16-27 7/16-27

Connector 2 BNC 10-32 10-32 10-32 Pigtail 7/16-27

Capacitance pF/ft 32 32 40 30 80 80

Center conductor resistance Ω/ft max 0.5 0.5 0.6 0.6 0.2 N/A

Conductor size AWG 30 30 33 33 20 N/A

Jacket material Teflon® Teflon® Teflon® Teflon® Teflon® SS


Bend radius in 0.85 0.75 0.12 N/A 0.60 0.8

Temperature range °C (°F) -254 to +260(-423 to +500

-258 to +260(-432 to +500)

-184 to +260(-300 to +500)

-184 to +177(-300 to +350)

-54 to +260(-65 to +500)

-54 to +482(-65 to +900)

Low noise Yes Yes Yes Yes Yes Yes

1-64

BNC

1.00 UNM

M3

10-32

Pigtail

7/16-27

4 pin plug

4 pin receptacle

6 pin receptacle

1.20 UNM

6-40

48 49Sensorex—Servo inclinometersSensorex—Servo inclinometers

Sensorex series number SX41100 SX41200 SX41400

Description Digital servo-inclinometerHigh performance

Servo-inclinometer / accelerometer High performance

Dual axis servo-inclinometerHigh performance

Linearity % FS < ± 0.02 < ± 0.05 < ± 0.05

Thermal sensitivity drift 100 ppm of reading / °C < 100 ppm of reading / °C < 100 ppm of reading / °C

Zero drift 50 ppm of FS / °C < 100 ppm FSO / °C < 100 ppm FSO / °C

Operating temperature °C (°F) -40 to +85 (-40 to +185) -40 to +80 (-40 to +176) -40 to +80 (-40 to +176)

Range ± 1 to ± 70° ± 3 to ± 90° ± 3 to ± 90°

Power supply V 9 to 30 10 to 30 10 to 30

Output ± 5 V, 4–20 mA, RS485 ± 5 V, 4–20 mA ± 5 V, 4–20 mA

Bandwidth Hz (-3 dB) 0.1 to 10 (adjustable) 3 to 15 (according to range) 3 to 10 (according to range)

Dimensions mm 65 x 55 x 36 67 x 35 x 51 76 x 70 x 51

IP rating 65 65 65


Description ATEX Dual axis servo-inclinometerHigh performance Single axis MEMS inclinometer Dual axis MEMS inclinometer

Linearity % FS < 0.05 < ± 0.7 < ± 0.7

Thermal sensitivity drift < 100 ppm of reading / °C 100 ppm of reading / °C 100 ppm of reading / °C

Zero drift < 100 ppm FSO / °C 100 ppm of FS / °C 100 ppm of FS / °C


Range ± 1 to ± 90° ± 5 to ± 90° ± 5 to ± 90°

Power supply V 24 ± 4V 9 to 36 9 to 36

Output 4–20 mA 0–5 V, 4–20 mA 0–5 V, 4–20 mA

Bandwidth Hz (-3 dB) 3 to 10 (according to range) 10 10

Dimensions mm 133 x 52 x 60 27 x 22 x 35 38 x 30 x 35

IP rating 67 65 65

Servo inclinometers

The Sensorex range of high-precision tilt sensors from Meggitt Sensing Systems is ideal for pipeline leveling, structural testing, rail monitoring, and general angular measurements. They feature oil immersed sensing elements, for high resistance to external shock and vibration inputs, with IP65 to IP68 sealed housings for enhanced protection, and optional ATEX certification for explosive environment applications.

Gravity-referenced servo inclinometers incorporate the earth’s gravitational field (±1 g) as their primary measurement reference point. They are most commonly used in civil engineering, industrial production (robotics and automation), rail and general laboratory environments (test benches and prototyping). High-performance MEMS inclinometers are typically used within space constrained environments, and offer precision tilt measurement capabilities within a compact and robust package size. They are used for pitch and roll measurements; satellite and antennae dish monitoring, as well as machinery monitoring and control applications.

Typical applications> Rail-track gauging-monitoring

> Platform/antenna leveling

> Automatic stacking cranes

> Railway maintenance vehicles

> Continuous casting angle monitoring

> LNG ship trim and list control

For each Sensorex series, refer to data sheet for part number configuration.


50 51Sensorex—Inertial systems/servo accelerometersSensorex—Inertial systems/servo accelerometers

Sensorex series number SX41800

Description Digital servo-accelerometer

Linearity < ± 0.02% FS

Thermal sensitivity drift 100 ppm of reading / °C

Zero drift 50 ppm of FS / °C

Operating temperature °C (°F) -40 to +85 (-40 to +185)

Range g ± 0.1 / ± 0.25 / ± 0.5 / ± 1.0

Power supply V 9 to 30

Output ± 5 V, 4–20 mA, RS485 Modbus

Bandwidth Hz (-3 dB) 0.1 to 10

Dimensions mm 65 x 55 x 36

IP rating 65

The Sensorex range of inertial measurement units (IMUs) incorporates MEMS sensors with no moving parts, ensuring their high-reliability performance in severe environments. Sensorex IMUs are used to measure the real-time angular speed and acceleration on three axes with high accuracy. The “REDs” digital model is fully compensated for the efforts of non-linearity and temperature drift, as well as for bias and misalignment errors. Rugged, lightweight and compact, Sensorex IMUs are ideal for use in onboard flight testing, road and rail study, telemetry. In addition Meggitt Sensing Systems offers a range of Sensorex MEMS-packaged gyrometers, designed to measure angular velocity to a high degree of accuracy.

Typical applications> Automatic Train Control (ATC/ATP)

> Road car test

> Flight test characterization

> Seismic surveying

> Telemetry

> Rail vehicle test

Inertial systems/servo accelerometers


Description Rugged MEMS inertial measurement unit

High performance MEMS inertial measurement unit MEMS packaged gyrometer

Linearity Acc. < ± 0.9% FS ;Gyro. < ± 1% FS

Acc. < ± 0.9% FS ;Gyro. < ± 0.1% FS < ± 1% FS

Scale factor drift ± 3% OTR ± 0.3% OTR ± 3% OTR

Bias drift ± 3°/s OTR ± 0.4°/s OTR ± 3°/s OTR


Range Acc. ± 2 to ± 10 g Gyro. ± 50 to ± 110°/s

Acc. ± 2 to ± 10 g Gyro. ± 50 to ± 110°/s ± 50 to 200°/s

Power supply V 9 to 36 10 to 36 9 to 36

Output ± 5 V ± 5 V, RS485 Modbus ± 5 V

Bandwidth Hz (-3 dB) 50 0.1 to 100 (adjustable) 30 to 80 (according to range)

Dimensions mm Diam. 90 x 91.5 Diam. 90 x 91.5 113.9 x 35.3 x 32.5

IP rating 65 65 65



52 53Sensorex—LVDT and RVDTSensorex—LVDT and RVDT

Sensorex series number SX20MD SX20MER SX20MEC2R SX36RV

Description Digital LVDT M12 connector DC / DC LVDT Cable output

DC / DC LVDT Connector output Intrinsically safe RVDT

Linearity % FS < ± 0.05 < ± 0.25 < ± 0.25 < 0.25

Thermal sensitivity drift 50 ppm of reading / °C < 300 ppm of reading / °C < 300 ppm of reading / °C < 800 ppm of reading / °C

Zero drift ppm FS / °C 30 < 80 < 80 NC

Operating temperature °C (°F) -40 to +85 (-40 to +185) -40 to +85 (-40 to +185) -40 to +85 (-40 to +185) -40 to +100 (-40 to +212)

Power supply/output 12 to 30 VDC 24 VDC ± 10 24 VDC ± 10 AC / AC

Stroke mm ± 2.5 to ± 150 ± 2.5 to ± 150 ± 2.5 to ± 150 ± 10° to ± 60°

Size diameter mm 20 20 20 36

Options No Gauge head / shrivel joints No No

IP rating 66 66 67 54

Sensorex series number SX12K SX12V SX12W SX CER

Description LVDT Cable output LVDT for servo-actuator LVDT

Wires outputLVDT with guide and swivel joints

Linearity % FS < ± 0.15 < ± 0.3 < ± 0.15 < 0.3

Thermal sensitivity drift < 150 ppm of reading / °C < 500 ppm of reading / °C < 150 ppm of reading / °C < 500 ppm of reading / °C

Zero drift ppm FS / °C 50 50 50 < 50

Operating temperature °C (°F) -40 to +200 (-40 to +392) -40 to +125 (-40 to +257) -40 to +200 (-40 to +392) -40 to +80 (-40 to +176)

Power supply/output AC / AC AC / AC AC / AC AC / AC

Stroke mm ± 3 to ± 150 ± 12.5 to ± 150 ± 3 to ± 150 ± 3 to ± 150

Size diameter mm 12 12 12 20

Options HT 200°C High pressure: 350 Bar HT 200°C or HP: 350 Bar

Intrinsically safe version available

IP rating 66 65 66 67

LVDT and RVDT

Linear position and displacement sensors are designed to produce an electrical output, proportional to the displacement of a free moving core, to assess critical parameters such as dimensional control and actuator position feedback within hydraulic cylinders and other servo-control applications.

The Sensorex range of standard and custom high-performance linear variable differential transformers (LVDTs), available in wire, cable and connector styles, offers friction-free operation, small size, infinite resolution, long service life and measurement repeatability within civil engineering, industrial automation, robotics, safety systems, test benches and prototyping applications. These compact sensors offer multi-step windings with extremely favorable size-to-stroke ratios, as well as ATEX-certified intrinsically safe versions for use in nuclear and other hazardous environments. In addition, Meggitt Sensing Systems offers a range of DC-DC LVDTs, incorporating Sensorex hybrid technologies and eliminating the need for signal conditioning and power supplies.

Typical applications> Structure monitoring

> Servo-actuator feed-back

> Test bench instrumentation

> Metrology/dimensional controls

> Servo-valve feed-back

> Race car clutch/steering control



54 55Sensorex—LVDT/RVDT signal conditionersSensorex—LVDT/RVDT signal conditioners

Sensorex series number SX3120 SX3310 SX3320 SX690210279

Description LVDT conditioner Strain gauge conditioner Strain gauge conditioner with threshold

Intrinsically safeLVDT / RVDT conditioner

Operating temperature °C (°F) 0 to +70 (+32 to +158) 0 to +70 (+32 to +158) 0 to +70 (+32 to +158) -40 to +85 (-40 to +185)

Power supply 24 VDC 24 ± 4 VDC 24 ± 8 VDC 15 to 28 V

Output± 10 V,0–10 V,4–20 mA

± 10 V, 0–10 V, 4–20 mA

± 10 V, 0–10 V, 4–20 mA

4–20 mA

Dimensions Din Din Din 214 x 125 x 55

Channel 1 1 1 1

Options No No No No

Sensorex series number Rack 9000 SX9130 SX9131

Description LVDT conditioner rack LVDT conditioning card Digital LVDT conditioning card

Operating temperature °C (°F) 0 to +60 (+32 to +140) 0 to +70 (+32 to +158) 0 to +70 (+32 to +158)

Power supply 220 VAC or ± 15 V ± 15 VDC ± 15 VDC

Output 0–10 V, 4–20 mA

± 10 V or 0–10 V, 4–20 mA

± 10 V or 0–10 V, 4–20 mA, RS485 MODBUS

Dimensions 19" or 1/2 19" Euro Euro

Channel 3 or 10 / Rack 1 1

Options Racks available for 3 units or 10 units RS232, RS485 outputs No No

LVDT/RVDT signal conditioners

Typical applications> LVDT-RVDT power supply

> LVDT-RVDT signal conditioning

> Rackable cards and displays

> DIN rail mounting

> Strain gauge signal conditioning

> ATEX certified conditioners

As a complement to the precision LVDT and RVDT sensors highlighted in this catalog, Meggitt Sensing Systems offers a complete range of Sensorex conditioning instrumentation, including display signal conditioners, signal conditioning cards, boards and racks. When used with Sensorex LVDTs and RVDTs, the conditioners convert a transducer’s mechanical position into a corresponding electrical output, with a high degree of accuracy and repeatability. Sensorex conditioners are ideal for use in test laboratory environments and general testing applications in the process industries, where minimal maintenance and easy-fit configurations are needed to reduce downtime and costs.



56 57Wilcoxon Research—ShakersWilcoxon Research—Shakers

Wilcoxon Research model number F7 F7-1 F4 / F7

Description Piezoelectric shaker Piezoelectric shaker Electromagnetic / piezoelectric dual vibration shaker system

Compatible impedance head Included N/A Included


Nominal force output lb (kg) 100 (45.4) 10 (4.5) 10 (4.5)

Diameter in (cm) 2.20 (5.59) 2.20 (5.59) 5.10 (12.95)

Weight lbs (kg) 2.5 (1.1) 2.8 (1.3) 8.2 (3.7)

Matching network recommended N7FS N8HFS N7FS

Shakers

Typical applications> Structural testing

> Material studies

> Product testing

> Quality assurance


> Modal testing

Wilcoxon Research piezoelectric and electromagnetic shakers are used to provide reliable structural excitation of a test article within a controlled, localized environment. By simulating such dynamic forces and natural frequencies, shakers can be used along with sensors and other vibration monitoring devices to reveal cracks, defects, weaknesses or other abnormalities, allowing an engineer or test technician to better predict structural behavior over time. Electromagnetic shakers excite primarily at low frequencies to measure components, such as first bending mode of airframes and ship hulls. Piezoelectric shakers excite at higher frequencies, typically above the acoustic range, where materials such as semiconductor components and high-strength metals begin to break apart.

Wilcoxon Research model number D60H D60L D125L

Description Piezoelectric shaker tables Piezoelectric shaker tables Piezoelectric shaker tables

Compatible impedance head N/A N/A N/A


Max acceleration g 1500 1500 1800

Diameter in (cm) 3.0 (7.62) 4.0 (10.16) 7.5 (19.05)

Weight lbs (kg) 8.8 (4.0) 13.0 (6.0) 99 (45)

Matching network recommended N8FS N8FS N8FS

Wilcoxon Research model number F3 / Z602WA F4 / Z820WA F5B / Z11 F10 / Z820WA

Description Electromagnetic shaker system

Electromagnetic shaker system



Compatible impedance head Included, available without Z602WA

Included, available without Z8280WA

Included, available without Z11

Included, available without Z8280WA

Frequency range Hz 25–10,000 10–7500 10–10,000 5–2000

Nominal force output lb (kg) 1 (0.45) 10 (4.5) 0.4 (0.2) 20 (9.1)

Diameter in (cm) 2.26 (5.74) 5.10 (12.95) 1.35 (3.43) 8.25 (20.96)

Weight lbs (kg) 0.83 (0.38) 6.8 (3.1) 0.376 (0.17) 28 (12.7)

58 59Vibro-Meter—Dynamic pressure sensorsVibro-Meter—Dynamic pressure sensors

Vibro-Meter model number CP211

DescriptionExtreme temperatureHigh pressureCombustion monitoring

Sensitivity pC/bar 25

Resonant frequency kHz > 80

Vibration sensitivity pC/g (bar/g) ≤ 0.0625 (≤ 0.0025)

Max temperature sensor ˚C (˚F) +777 (+1431)

Max temperature connector ˚C (˚F) +777 (+1431)

Operating static pressure psi N/A

Dynamic range psi 5076

Weight gram (without cable) 12

Exit type/connector Twin core MI-cable / VM-LEMO connector

Dynamic pressure sensors

Typical applications> Combustion instability monitoring

> High-pressure steam

> Propulsion systems testing

> Gas turbine testing

> Extreme high-temperature in-laboratory dynamic pressure measurements

Vibro-Meter high-precision piezoelectric pressure sensors are designed for long-term dynamic pressure monitoring or development testing. The transducers are specially designed to ensure dynamic pressure fluctuation measurement accuracy of up to 5076 psi, with continuous reliable operation in temperatures exceeding +777°C (+1431°F), as well as within high static pressure environments. The use of Meggitt’s own proprietary single crystal material, operating in compression mode, makes it an extremely stable and reliable dynamic pressure transducer at such extreme temperatures. Sensors are fitted with an integral mineral insulated cable (twin-conductor), terminating in either a LEMO or special high-temperature connector. Models are also available with all-welded high-temperature Inconel housings, integral hardline cables, differential output and output signal-to-case isolation. ATEX certified versions are also available for use in explosive environments.

60 61

To ensure high-reliability sensor performance and repeatable results, the use of appropriately selected mounting studs, blocks, bases, adapters and other accessories is highly recommended. These tools are used to properly affix a sensor to the test structure or mounting surface with a minimum of additional mechanical stress and to optimize the frequency response. Meggitt Sensing Systems manufactures a complete range of accessories, designed and fully tested to be directly compatible with our sensors, transducers and related instrumentation. When selecting an accessory for a given measurement requirement, it is important to note that selection of and adherence to proper sensor mounting techniques, as well as preparation of the mounting surface, is absolutely critical. For questions regarding the appropriateness of various sensor mounting techniques or selection of proper accessories, please contact any member of the Meggitt Sensing Systems sales and applications engineering team.

Accessories

35818-XXX 35918-4 EJ21 EJ34 EJ807

Category Electronics Electronics Adapters Adapters Adapters

DescriptionFilter/integrator, provides capability for single or double integration

Charge converter plug-in module 10-32 to BNC adapter 10-32 to 10-32 Serial to RJ-11 adapter

Compatibility 2775B 4430A 133, 6634C, 2775B 10-32 cables 133, 136, 2775B

Brand Endevco® Endevco® Endevco® Endevco® Endevco®

EMAM0069 EMAM0071 EMAM0364

Description

Spherical set of five open-cell-structure foam windscreens for mounting on ½˝ microphones with standard protection grids when making acoustic measurements in windy or other airflow conditions. 90 mm in diameter.

Spherical set of five open-cell-structure foam windscreens for mounting on ¼˝ microphones with standard protection grids when making acoustic measurements in windy or other airflow conditions. 90 mm in diameter.

Set of six open-cell-structure foam windscreens for mounting on array microphones when making acoustic measurements in windy or other airflow conditions. 40 mm in diameter.

Brand Endevco® Endevco® Endevco®

EMRA0020 EMRA0022 EMRA0063

Description

½˝ nose cone for replacing the standard protection grid of a ½˝ microphone when making acoustic measurements in laminar airflow.

¼˝ nose cone for replacing the standard protection grid of a ¼˝ microphone when making acoustic measurements in laminar airflow.

Adapter for using a 1/8˝ microphone with a ¼˝ preamplifier. It can be used with any standard 1/8˝ microphone and ¼˝ preamplifier such as the model EM26CB.


AccessoriesAccessories

EMAL0012 EMAL0013

Description Tripod adapter for ½” microphones / preamplifiers Tripod adapter for ¼” microphones / preamplifiers

Brand Endevco® Endevco®

4948 4948A 31979

Category Electronics Electronics Electronics

Description 19 inch rack mount kit, holds six units

19 inch rack mount kit, holds six units

19 inch rack mount kit, holds 3 units

Compatibility 6634C 2775B 133, 136


62 63

2967B 2981-12 2985 2985M5 2986M3

Category Mounting Mounting Mounting Mounting Mounting

Description

Triaxial mounting block, 1/4-28 threaded holes, 10-32 screw mount block (provided)

Mounting Stud, 10-32, Hex I.D.

Insulated mounting stud, 10-32 integral studs both ends, 7.5 grams

Insulated mounting stud, 10-32 integral stud for accelerometer, 1/4-28 integral stud for mounting

Mounting base, 1/4-28 integral stud, adhesive mount block, 13/16” hex

Material Titanium 17-4PH stainless steel condition H900 Stainless steel Stainless steel Stainless steel

Compatibility 7255A, 2255B Accelerometers with 10-32 threaded hole

Accelerometers with 10-32 threaded hole


Accelerometers with 1/4-28 threaded hole


2988M4 7953A 7964B 7970 7990


Description

Mounting base, 1/4-28 integral stud, adhesive mount block, 13/16” hex

Triaxial mounting block, 0-80 threaded holes, 2-56 screw mount (provided)



Triaxial mounting block, 4-40 threaded holes

Material Stainless steel Magnesium alloy Aluminum Titanium Aluminum alloy

Compatibility Accelerometers with 1/4-28 threaded hole

7264-2000, 7264C, 7264D, 7264G 7264B 7270A 7290A, 7290D, 7290E


2950 2950M3 2950M16 2950M28 2961


Description

Triaxial mounting block, 10-32 threaded holes, 4-40 screw mount block (provided)


Triaxial mounting block, adhesive mount block


Mounting block, 0-80 screw mount (provided) or 10-32 stud mount block (provided)

Material Aluminum alloy Aluminum alloy Aluminum alloy Aluminum alloy Aluminum alloy

Compatibility Accelerometers with 10-32 stud

2221D, 2221F, 7221A, 7251A 25A, 25B 7257AT 2222C, 2222D


The TC1 has a cube size of 1”. The TC2 cube size is 2.63” (2.63” x 2.63” x 2.63”)

41013 B1A B12 B2A B4


DescriptionCharge converter plug-in card for PE transducers

Rare earth magnetic mounting base, 10-32 stud, isolated, 0.95” diameter, 40 lbs force. Electrically isolates the sensor from ground to prevent ground loops

Rare earth magnetic mounting two-pole magnet base, ¼-28 threaded hole, 0.88” diameter, 20 lbs force

Rare earth magnetic mounting base, 10-32 stud, nonisolated, 0.95” diameter, 40 lbs. force

Rare earth magnetic mounting base, 10-32 stud, nonisolated, 0.68” diameter, 40 lbs. force

Material Beryllium copper Rare earth Rare earth Rare earth Rare earth

Compatibility 65, 65HT Accelerometers with 10-32 threaded hole

Accelerometers with 1/4-28 stud



Brand Endevco® Wilcoxon Research Wilcoxon Research Wilcoxon Research Wilcoxon Research

AccessoriesAccessories

SF4 SF5 TC1 TC2

Category Mounting Mounting Mounting Mounting

Description

Mounting stud, 10-32 UNF both ends, isolated, stainless steel with non-conductive layer of epoxy to prevent ground loops, recommended mounting torque 18 in-lbs

Epoxy mounting stud, 10-32 thread, 0.50” hex, recommended mounting torque 18 in-lbs

One inch triaxial mounting cube, 10-32 threaded holes, anodized aluminum, non-conductive coating prevents ground loops. Weight 1.27 oz (36 grams)

Triaxial mounting cube for 731A, 3/8-16 threaded holes, anodized aluminum, non-conductive coating prevents ground loops. Weight 17.6 oz (500 grams)

Material Stainless steel Anodized aluminum Anodized aluminum Anodized aluminum

Compatibility Accelerometers with 10-32 threaded holes

Accelerometers with 10-32 threaded holes

Accelerometers with 10-32 stud

Accelerometers with 3/8-16 stud

Brand Wilcoxon Research Wilcoxon Research Wilcoxon Research Wilcoxon Research

64 65Product selection guide—application indexProduct selection guide—application index

Absolute pressure products 8515C Pressure transducer, low profile, surface mount, 15 psia, 0.030” thin .........................................................................See pg 17 8530B Pressure transducer, miniature, 10-32 mount ...............................................................................................................See pg 17 8530BM37 Pressure transducer, miniature, 10-32 mount ...............................................................................................................See pg 17 8530C Pressure transducer, miniature, 10-32 mount ...............................................................................................................See pg 17 8540 Pressure transducer, miniature, 10-32 mount ...............................................................................................................See pg 17

Automotive crash test products 7231C ATD standard, undamped, optional cable .......................................................................................................................See pg 13 7264 Lightweight, undamped, high sensitivity ........................................................................................................................See pg 12 7264C Crash test standard, undamped, meets SAE J211/J2570 ..............................................................................................See pg 12 7264D High resonance, undamped, meets SAE J211/J2570 .....................................................................................................See pg 12 7264G Extremely rugged, damped, meets SAE J211/J2570 ......................................................................................................See pg 12 7268C Triaxial, undamped, broad frequency response .............................................................................................................See pg 11 7286 / 7287 Lightweight, low cost, undamped, optional cable...........................................................................................................See pg 13 7302BM4 Angular, rotational, undamped .......................................................................................................................................See pg 13

Electronics products 133 3 ch. PE/Isotron® amplifier 100 kHz bandwidth .............................................................................................................See pg 42 136 3 ch. DC amplifier, auto zero, shunt calibration ............................................................................................................See pg 42 433 3 ch. PE/Isotron® signal for i -TEDS™ ...........................................................................................................................See pg 43 436 3 ch. DC amplifier, auto-gain, auto zero, OASIS card ....................................................................................................See pg 43 482B 8 ch. Isotron® amplifier for i -TEDS™ (IEEE P1451.4) sensors and ...............................................................................See pg 43 Isotron® sensors, modal testing, OASIS card ................................................................................................................ 2680MX 1 ch. PE amplifier, biased/unbiased outputs, 2 pole filter options ...............................................................................See pg 41 2685MX 1 ch. Isotron® amplifier, dual gain outputs, 2 pole filter options ..................................................................................See pg 41 2771C Ultra low noise, 1 ch. PE remote charge converter gain of 0.1, 1.0, 10 .........................................................................See pg 41 2775B 1 ch. PE/Isotron® amplifier, AC/DC/servo outputs, isolated .........................................................................................See pg 41 2777A 1 ch. PE remote charge converter .................................................................................................................................See pg 41 2793 16 ch. Isotron® amplifier, gain of 1 or 10 .......................................................................................................................See pg 42 4416B 1 ch. Isotron® amplifier, battery operated, low-cost .....................................................................................................See pg 41 4430A High performance signal conditioner, PE, low noise .....................................................................................................See pg 41 4830A Accelerometer simulator, test system integrity, single-ended and differential ...........................................................See pg 41 6634C 1 ch. multiple input, test cell amplifier ..........................................................................................................................See pg 41

Extreme temperature products 2248M1 +482°C, lightweight, flange mount, radiation hardened ................................................................................................See pg 21 2271A Operational from -269°C to +260˚C, side connector, ground isolated ..........................................................................See pg 22 2271AM20 Operational from -269°C to +260˚C, top connector, ground isolated ...........................................................................See pg 22 2276 +482°C, radiation hardened, case grounded, side connector ........................................................................................See pg 23 6233C +482°C, balanced differential output, three hole mount, 10 pC/g .................................................................................See pg 23 6237M70 +650°C, coaxial output, ground isolated, 10-32 connector ............................................................................................See pg 23 8540 +260°C, miniature pressure transducer, 10-32 mount .................................................................................................See pg 17

Gage and differential pressure products 8507C Pressure transducer, miniature, flush mount, 1 psig ...................................................................................................See pg 17 8510B Pressure transducer, miniature,10-32 mount, 1 psig ...................................................................................................See pg 17 8510C Pressure transducer, miniature,10-32 mount, 15 psig .................................................................................................See pg 17 8511A Pressure transducer, 3/8-24 UNF-2A mount, 5000 psig ...............................................................................................See pg 17

Product selection guide—application index

Gas turbines 522M17 High temperature piezoelectric dynamic pressure ...................................................................................................See pg 25 522M25A High temperature piezoelectric dynamic pressure ...................................................................................................See pg 25 6222S Balanced differential output, three hole mount .......................................................................................................See pg 23 6233C +482°C, balanced differential output, three hole mount ..........................................................................................See pg 23 6237M70 +650°C, coaxial output, ground isolated, 10-32 connector .......................................................................................See pg 23 6917 +260°C, high temperature braided cable assembly .................................................................................................See pg 47

High g shock 71M Surface mount, undamped, low mass .......................................................................................................................See pg 15 72 Lightly damped, rugged, ESP protection ...................................................................................................................See pg 15 73 / 73FC Triaxial, undamped, mounting options ......................................................................................................................See pg 15 2225 High g shock, industry standard, PE, 20,000 g shock ...............................................................................................See pg 20 2225M5A Very high g shock, industry standard, PE, 100,000 g shock limit .............................................................................See pg 20 2255B Isotron® shock accelerometer, 0.1 mV/g, built-in 30 kHz LP filter, 50,000 g shock limit ........................................See pg 31 7255A Isotron®, shock accelerometer, built-in 10 kHz mechanical LP filter, 0.1 mV/g .....................................................See pg 33 7270A High resonance, undamped, shock standard ............................................................................................................See pg 14 7270AM4 High resonance, undamped, stud mount ...................................................................................................................See pg 14 7270AM6 Rugged, mechanical filter, stud mount .....................................................................................................................See pg 14 7274 Triaxial, undamped, high resonance ..........................................................................................................................See pg 14

Industrial machine monitoring 5220B Rugged, isolated Faraday shield, 100 mV/g ...............................................................................................................See pg 31

Lightweight products 22 Ultra-miniature, 0.14 gm ..........................................................................................................................................See pg 19 23 Ultra-miniature triaxial, lightweight, ground isolated .............................................................................................See pg 19 25A World’s smallest Isotron®, adhesive mount, 5 mV/g, ground isolated .....................................................................See pg 27 25B World’s smallest Isotron®, adhesive mount, 5 mV/g, detachable cable ...................................................................See pg 27 27A11 / A12 World’s smallest iTEDS, hermetically sealed, 10 mV/g and 100 mV/g options ........................................................See pg 27 27AM1 Lightweight Isotron® teardrop ...................................................................................................................................See pg 27 35A Miniature triaxial Isotron®, 5 mV/g, adhesive mount ................................................................................................See pg 28 65 Miniature Isotron®, triaxial, 10 and 100 mV/g ...........................................................................................................See pg 28 65HT Miniature high temperature Isotron®, 10 mV/g ........................................................................................................See pg 28 2222C Industry standard, adhesive mount ..........................................................................................................................See pg 20 2250A Miniature, lightweight ( 0.4 gram ), 10 mV/g, adhesive mount .................................................................................See pg 30 2250AM1 Lightweight ( 0.4 gram ), 10 mV/g, adhesive mount, solder pin connection ............................................................See pg 30 7250A 360˚ cable orientation, lightweight, flight test applications, general purpose ........................................................See pg 31 7253C Low profile triaxial Isotron®, 10 mV/g, bolt or adhesive mount ...............................................................................See pg 32 7269 Triaxial, miniature, lightweight, DC response, overtravel stops ..............................................................................See pg 11 8507C Miniature pressure sensor, 1 to 15 psig ranges .......................................................................................................See pg 17 8515C Miniature, low profile pressure sensor, 15 and 50 psi ..............................................................................................See pg 17 40366 Miniature VC accelerometer, hermetic, SMT installation, ± 2 g range with 10 g overrange stops ..........................See pg 09

66 67Product selection guide—application indexProduct selection guide—application index

Low frequency and low level accelerometers 86 Ultra low frequency, high sensitivity Isotron®, 10 V/g ..............................................................................................See pg 29 87 Very high sensitivity, high resolution, 1 or 10 V/g .....................................................................................................See pg 29 752A13 High sensitivity, low noise, iTEDS, 1 V/g ...................................................................................................................See pg 30 2262A DC response damped, hermetic, hex base, 1000 and 2000 g available ...................................................................See pg 11 7265A-HS DC response, mechanical stops, damped, 5 and 25 mV/g available ........................................................................See pg 11 7290A DC response, low-level acceleration and inclination, very high sensitivity .............................................................See pg 09 7290D High accuracy, DC response with iTEDS, extreme temperatures ............................................................................See pg 09 7290E Wide bandwidth, DC response, digital compensation ..............................................................................................See pg 09 7703A +288°C, signal return isolated from case, 100 pC/g, 10-32 side connector .............................................................See pg 24

Multi purpose accelerometers 65 Miniature Isotron®, triaxial, 10 and 100 mV/g ...........................................................................................................See pg 28 256 Low-cost, modal ready, 10 mV/g, hermetically sealed, Isotron® .............................................................................See pg 30 256HX Low-cost, stud mount, isolated case, 10 mV/g, Isotron® .........................................................................................See pg 30 2220E Industry standard, screw mount 360° cable orientation, 3 pC/g ...............................................................................See pg 19 2221F Industry standard, screw mount 360° cable orientation, 10 pC/g .............................................................................See pg 20 2222C Industry standard, adhesive mount ..........................................................................................................................See pg 20 2222D Industry standard, adhesive mount, connectorized ..................................................................................................See pg 20 2224C Top connector, general purpose ...............................................................................................................................See pg 20 2225 High g shock, industry standard ...............................................................................................................................See pg 20 2226C +177°C, lightweight, top connector, adhesive mount ...............................................................................................See pg 21 2228C +177°C, triaxial, ground isolated ...............................................................................................................................See pg 21 2255B Isotron® shock accelerometer, 0.1 mV/g, built-in 30 kHz LP filter ..........................................................................See pg 31 2258A Triaxial, 10 mV/g, hermetically sealed, ground isolated ..........................................................................................See pg 31 7251A Wide bandwidth, center bolt mount, low profile, 10 mV/g ........................................................................................See pg 32 7255A Isotron®, shock accelerometer, built-in 10 kHz mechanical LP filter, 0.1 mV/g .....................................................See pg 33

Medical/SMT 12M1B Miniature PE accelerometer, 1.9 pC/g .......................................................................................................................See pg 19 40366 Miniature VC accelerometer, hermetic, SMT installation, ± 2 g range with 10 g overrange stops ..........................See pg 09

Microphones 2510 Vibration compensated, high temperature, 100 to > 180 dB SPL .............................................................................See pg 35 8507C Miniature, -97 dB sensitivity, flush mount ................................................................................................................See pg 17 8510B Miniature, -92 dB sensitivity, 10-32 mounting ..........................................................................................................See pg 17 EM40AD 1/2 inch prepolarized condenser, pressure ...............................................................................................................See pg 35 EM40AE 1/2 inch prepolarized condenser, free-field ..............................................................................................................See pg 35 EM40AM 1/2 inch wide frequency condenser, free-field ..........................................................................................................See pg 35 EM40AO 1/2 inch wide frequency condenser, pressure ...........................................................................................................See pg 35 EM40AQ 1/2 inch prepolarized condenser, random incidence ................................................................................................See pg 35 EM40BD 1/4 inch prepolarized condenser, pressure ...............................................................................................................See pg 35 EM40BE 1/4 inch prepolarized condenser, free-field ..............................................................................................................See pg 35 EM40DD 1/8 inch prepolarized condenser, pressure ...............................................................................................................See pg 35 EM40PH Low-cost general purpose .........................................................................................................................................See pg 39 EM40PL Low-cost general purpose .........................................................................................................................................See pg 39 EM40PS Low-profile surface microphone ................................................................................................................................See pg 39 EM46AD EM40AD microphone and EM26CA preamp, iTEDS ...................................................................................................See pg 37 EM46AE EM40AE microphone and EM26CA preamp, iTEDS ...................................................................................................See pg 36 EM46AO EM40AO microphone and EM26CA preamp, iTEDS ...................................................................................................See pg 37 EM46AQ EM40AQ microphone and EM26CA preamp, iTEDS ...................................................................................................See pg 36 EM46BD EM40BD microphone and EM26CB preamp, iTEDS ..................................................................................................See pg 37 EM46BE EM40BE microphone and EM26CB preamp, iTEDS ...................................................................................................See pg 36

Nuclear applications 2248M1 +482˚C, lightweight, integral stud, radiation hardened ...........................................................................................See pg 21 2273AM1 Radiation hardened, ground isolated, side connector PE accelerometer ................................................................See pg 22 2273AM20 Radiation hardened, ground isolated, top connector PE accelerometer .................................................................See pg 22 2276 +482˚C, radiation hardened, case grounded, side connector ..................................................................................See pg 23 2771C Ultra low noise in line charge converter ...................................................................................................................See pg 41 3075M6 Hardline cable, +482˚C, hermetically sealed ...........................................................................................................See pg 47 7703A +288˚C, signal return isolated from case, 100 pC/g, 10-32 side connector ............................................................See pg 24 7704A +288˚C, signal return isolated from case, 100 pC/g, 10-32 top connector ..............................................................See pg 24

Products for testing movement 7290A DC response, 66 mV/g, low-level acceleration, field test .........................................................................................See pg 09 7290D High accuracy, DC response with iTEDS, extreme temperatures ............................................................................See pg 09 7290E Wide bandwidth, DC response, digital compensation ..............................................................................................See pg 09

Space and flight products 2221F +260°C, 10 pC/g, center mount, PE accelerometer ..................................................................................................See pg 20 2510 100 to >180 dB SPL, vibration compensated, high temperature microphone ..........................................................See pg 35 2510M4A Special mounting for flush diaphragms, high temperature .....................................................................................See pg 35 7250A Flight test ready, lightweight ( 1.8 gm ), 10 mV/g, hermetically sealed ...................................................................See pg 31 7250AM1 Lightweight ( 1.8 gm ), 10 mV/g, hermetically sealed, solder pin connection .........................................................See pg 32 7290A DC response, 1 V/g, low-level acceleration, field test ..............................................................................................See pg 09 7290D High accuracy, DC response with iTEDS, extreme temperatures ............................................................................See pg 09 7290E Wide bandwidth, DC response, digital compensation ..............................................................................................See pg 09 8507C Pressure transducer (microphone), miniature, -97 dB sensitivity, flush mount .....................................................See pg 17 8510B Pressure transducer (microphone), -92 dB sensitivity, 10-32 mounting .................................................................See pg 17

Specialized application products 2270 Back-to-back PE calibration accelerometer .............................................................................................................See pg 21 2273AM1 +399˚C radiation hardened, ground isolated, side connector ..................................................................................See pg 22 2273AM20 +399˚C radiation hardened, ground isolated, top connector ...................................................................................See pg 22 2276 +482°C radiation hardened, case grounded, side connector ...................................................................................See pg 23 2680MX 1 ch. PE amplifier, biased/unbiased outputs, 2 pole filter options ..........................................................................See pg 41 2685MX 1 ch. Isotron® amplifier, dual gain outputs, 2 pole filter options .............................................................................See pg 41 6237M70 +650°C, coaxial output, ground isolated, 10-32 connector .......................................................................................See pg 23 7240C High frequency PE accelerometer (20 kHz) ...............................................................................................................See pg 24 7259B Isotron®, high frequency (30 kHz), lightweight (4.6 gm), 10 mV/g ............................................................................See pg 33 D60H Piezoelectric shaker table..........................................................................................................................................See pg 57 D60L Piezoelectric shaker table..........................................................................................................................................See pg 57 D125L Piezoelectric shaker table..........................................................................................................................................See pg 57 F3 / Z602WA Electromagnetic shaker system ................................................................................................................................See pg 57 F4 / F7 Electromagnetic/piezoelectric dual vibration shaker system ...................................................................................See pg 57 F4 / Z820WA Electromagnetic shaker system ................................................................................................................................See pg 57 F5B / Z11 Electromagnetic shaker system ................................................................................................................................See pg 57 F7 Piezoelectric shaker ...................................................................................................................................................See pg 57 F7-1 Piezoelectric shaker ...................................................................................................................................................See pg 57 F10 / Z820WA Electromagnetic shaker system ................................................................................................................................See pg 57

Product selection guide—application index

68 69Selecting accelerometers for test applicationsSelecting accelerometers for test applications

Selecting accelerometers for test applications

Piezoelectric (PE) accelerometerThe piezoelectric (PE) accelerometer uses a simple spring-mass principle, in which a force is generated that relates to amplitude and frequency. This force is applied to the PE element, which develops an electrical charge proportional to mechanical motion. Different configurations of PE accelerometer elements are used to support specific applications.

Advantages of PE sensors> The single-ended compression type is optimum for low-level

measurements because of the high sensitivity that can be achieved by stacking multiple crystals and connecting them in parallel.

> A shear mode design allows for the construction of small, lightweight sensors suitable for monitoring of small components and test articles. A key advantage of the shear design is the isolation of the sensing element from the base, which provides excellent protection from base strain and temperature transients.

> PE accelerometers are often specified where the use of an extremely rugged high-temperature device is required. These sensors can measure a wide range of temperatures, from cryogenics to the extreme heat environments of gas turbine engines.

> Gain also may be optimized within PE accelerometers to allow for substitution of a smaller accelerometer within a given application. The upper end of the frequency response can be tailored with electronic filtering to match the anticipated measurement range and suppress natural mechanical resonances. The low-frequency response typically is set at 1 Hz for PE accelerometers and can be pushed close to 50 kHz.

> PE accelerometers are available in a wide range of shapes and sizes, from micro-miniature for PC circuit board or small electronic device testing to larger sizes used in seismic or turbofan applications.

Isotron® accelerometerThe trade name Isotron® refers to a type of piezoelectric (PE) accelerometer with internal electronics (IEPE) that allows it to convert charge to a low-impedance voltage output. Its temperature response is somewhat limited due to its onboard electronics. These internal

Meggitt Sensing Systems designs and manufactures a variety of accelerometers for high-reliability measurements of vibration, shock and inertial motion.

An accelerometer senses motion and produces an electrical output proportional to the magnitude, frequency and amplitude of input. To meet various testing requirements, several types of accelerometer technologies are available, each differing in terms of their recommended usage, performance specifications, power requirements and signal conditioning characteristics.

The following article is intended as a helpful general overview of accelerometer technology types and their application considerations. For technical assistance, please contact any member of our applications engineering team or your local authorized sales representative. A list of worldwide contacts may be found on the back page of this catalogue.

electronics can further increase susceptibility to electrostatic discharge (ESD). This type of accelerometer is primarily specified for applications in which environmental conditions permit its use, including HALT/HASS/ESS testing, industrial vibration monitoring and general purpose vibration and shock testing.

Piezoresistive (PR) accelerometerMore recent PR strain gauge accelerometer designs consist of a rugged monolithic assembly with solid-state MEMS resistors that change in resistance in proportion to applied mechanical stress.

Advantages of PR sensors> The monolithic MEMS sensor exhibits high sensitivity with an excellent

signal-to-noise ratio and a typical temperature range of -20°C to +120°C (-4°F to +248°F).

> PR accelerometers feature DC response characteristics make it useful for measuring long duration pulses such as those experienced during automotive crash events and munitions blast testing.

Variable capacitance (VC) accelerometerVC accelerometers feature a MEMS sensing element sandwiched between a lid and a base and electrostatically bonded to form a parallel-plate capacitor. This accelerometer features DC response, stable damping for good frequency coverage and rugged construction. Integral electronics with DC excitation provides a high-level, low-impedance output signal that is stable from -20°C to +120°C (-4°F to +248°F). This sensor is designed for low-g measurement, yet can also withstand higher g shocks. It is suitable for trajectory monitoring, structural evaluation, flutter testing, and vehicle dynamics testing of automotive suspensions and brakes.

Sensors with on-board memoryCommonly referred to as smart sensors, provide an inherently improved signal-to-noise ratio. Their key feature is conformance to the IEEE 1451.4 Transducer Electronic Data Sheet (TEDS) specification, which allows for onboard storage of accelerometer serial number and calibration data, for simplified test setups with reduced errors.

Accelerometer performance characteristicsTo obtain meaningful acceleration data, one must fully understand the performance characteristics of the accelerometers under consideration. There are several types of accelerometers and many designs within each category. The most critical trade-offs relate to sensitivity, weight and frequency response, and include:

> Sensitivity—Higher sensitivity results in a higher signal-to-noise ratio. Interfering electrostatic and electromagnetic noise will be less bothersome with a higher-sensitivity device. Higher sensitivity, however, may bring two disadvantages: greater accelerometer mass and a lower resonant frequency.

> Mass loading—Motion of the equipment under test will be attenuated if the dynamic mass of the accelerometer approaches the dynamic mass of the structure on which it is mounted. Consequently, a lightweight sensor must be used for the accurate evaluation of low-mass test articles.

> Low-frequency response—With a PE accelerometer, the low-frequency cutoff often is set at 1 to 5 Hz to reject any pyroelectric output. Some models, however, extend the cutoff to near DC. PR and VC accelerometers offer such DC response characteristics.

> High-frequency response—This is a function of both mechanical characteristics and the method used to attach the device. Most accelerometers exhibit an undamped single degree-of-freedom response when securely mounted. Response is relatively flat, to about 20% of the mounted resonant frequency. Correction factors can be derived for data obtained at higher frequencies. Electronic filtering can increase flat response to 50% of the mounted resonant frequency.

> Transverse sensitivity—The sensor must not produce any significant response when motion is applied in the lateral axes. Sensitivity to lateral motion can be held to less than 5% of normal sensitivity on an Endevco® device.

> Amplitude linearity—PE accelerometers have a predictable nonlinearity that can be expressed as a percentage increase in sensitivity as

acceleration increases, such as 1% per 500 g. The upper limit can be determined and expressed for each model. PR and VC sensors are extremely linear and specified for their combined nonlinearity, hysteresis, and non-repeatability specifications.

> Temperature sensitivity—Accelerometer sensitivity varies with temperature. Many models are optimized for stable sensitivity over a wide temperature range. Typically, the higher the temperature, the higher the degree of measurement error potential, unless compensated.

> Transient temperature effects—Compression mode PE and Isotron® accelerometers can produce an output with temperature changes. This problem has been virtually eliminated with the advent of shear mode accelerometers (most Endevco® accelerometers are shear mode types). Thermal transient errors tend to occur at very low frequencies and often go undetected. PR and VC devices have no significant response to temperature changes.

> Strain effects—The test item may flex, stretch, or bend at the point where an accelerometer is mounted, causing it to produce an erroneous output. Isolation may be improved by using insulated studs or adhesive mounting adapters. Shear accelerometers are much less sensitive to such errors than conventional compression types.

> Dirty environments—Every component in the measurement chain must be kept clean and dry to achieve optimum performance. PE accelerometers require more care because they are very sensitive to external contamination due to their high output impedance.

70 71Endevco® incentive programsEndevco® incentive programs

For more than 60 years, the Endevco® brand has been synonymous with an impeccable global reputation for top-quality precision sensors and instrumentation, successfully implemented in a variety of extreme environments. Our products can be consistently counted on to reliably perform according to published specifications, over an extended period of time, providing a lower total cost of ownership and enhanced value.

To make it even easier to do business with us, Meggitt offers a number of Endevco® customer incentive programs, ranging from comprehensive 5-year product line warranties, to stocking and availability guarantees, to competitor trade-in allowances and test fixture upgrade discounts. All are designed to provide even greater confidence, reliability and performance when choosing Endevco® sensors and instrumentation for your application requirements.

Endevco® incentive programs

University discount Meggitt offers a 15% Endevco® product discount to university customers. To qualify, “university” must be in the name of the ordering account.

Five-year product line warranty In early 2009, Meggitt was the first in the industry to offer a true 5-year product warranty across all of its Endevco® transducer and electronic instrumentation lines, worldwide. This warranty is without hidden loopholes or “fine print.” It is simply the confidence we have placed in our own product performance, and in turn, the same trust we invite our customers to place in us. As this warranty accompanies each of our products, it is simply another value added reason for choosing Endevco® products. For full warranty details visit www.endevco.com

US General Services Administration (GSA) pricing If you are a US government customer or a subcontractor authorized to buy against GSA contracts to fulfill your government purchasing requirements, we help to simplify your acquisition activity by providing a wide variety of products through Meggitt’s Endevco® GSA contract, GS-24F-1088B. Endevco® brand pressure transducers can be purchased through GenTek Corporation’s GSA contract, GS-07F-0055V. To view all Endevco® brand products offered through GSA, visit www.gsaadvantage.gov. For a listing of Endevco® pressure transducers offered through GSA, search GenTek at www.gsaadvantage.gov

Guaranteed In Stock™ When selecting from among Endevco® Guaranteed In Stock sensors, instrumentation, cable assemblies and accessories, be assured that products are guaranteed to be available and in stock at the time of order, or you’ll receive a 5% model discount at the time of purchase.

Competitive Trade-in program (CTi) Get added reliability and value for your application by making the switch to Endevco® brand sensors and instrumentation! Send us your working or non-working competitive product, let us help you to find the best Endevco® standard product replacement for your application, and receive a 15% trade-in discount, issued simultaneously with your product purchase. It’s as easy as that. Our trade-in allowance is applicable across all Endevco® standard product offerings. Purchases under the CTi program are also still covered by Endevco®’s 5-year product warranty. Contact Customer Service for more details.

-R Replacement sensors program Introducing a new, cost-effective way to upgrade existing test fixtures, without sacrificing quality or performance! The Endevco® -R Replacement sensors program allows customers to choose from among dozens of our most popular Isotron® (IEPE-type) and charge output piezoelectric accelerometers, at specially discounted prices.

72 73ContactsContacts

North American representatives

Applied [email protected] Tel: +952 361 6542 Area covered: MN, ND, SD, NE, IA

GenTek gentekrep.com Tel: +813 961 0689 Area covered: TN, NC, SC, GA, AL, MS, FL

HG Associates hgane.com Tel: +401 619 2880 Area covered: CT, MA, NH, VT, ME, RI

Hoskin Scientific hoskin.ca [email protected] Area covered: Canada

Kemp Instruments kempinstruments.com Tel: +972 437 9100 Area covered: TX, OK, AR, LA

RDP rdp-corp.com Tel: +937 253 6175 Area covered: OH, MI, IN, KY, PA, WV

Simpson’s [email protected] Tel: +316 945 2872 Area covered: Kansas (Program accounts: Cessna, Hawker, Learjet, Boeing, Spirit) All of Kansas for T&M

TAE-REP, Inc. taerep.com Tel: +585 586 8710 Area covered: NY

TMS Systems tmssales.com Tel: +303 488 0036 Area covered: AZ, UT, CO, WY, MT, NM, ID

TRI trirep.com Tel: +703 904 1860 Area covered: NJ, NY, PA, DC, DE, MD, VA

European representatives

AB-AD Technology & Engineering abadtech.co.il Tel: +972 9 7660932 Area covered: Israel

Abris abris.sp.ru Tel. +7 (812) 567 7928 Area covered: Russia-St. Petersburg

Active Electronics active-electronics.co.uk Tel: +44 (0) 1494 441414 Area covered: United Kingdom

Akron NV-SA akron.be Tel: +3216230103 Area covered: Belgium, Netherlands, Luxembourg

Latin American representatives

01dB 01db.com.br Tel: +55 11 5089 6465 Area covered: All Latin America except Chile and Argentina

Raien Ingenieria y Sistemas raien.com.ar Tel: +54-11 4701 9316 Area covered: Argentina

Raien Ingenieria y Sistemas raien.cl Tel: +56-32 268 2255 Area covered: Chile

Technology Calibration and Sales, S.R.L. de C.V tcsri.com.mx Tel: +011 5255 5393 8698 Area covered: Mexico

Asia representatives

AIMIL Ltd. aimil.com Tel: +91 11 30810200 Area covered: India

Bestech Australia Pty Ltd. bestech.com.au Tel: +61 3 9540 5100 Area covered: Australia, New Zealand

Dainan Tech (S) PTE Ltd. dainan.com.sg Tel: +65 6897 8977 Area covered: Singapore, Indonesia, Malaysia, Thailand, Phillipines

Foresight Techno foresight-t.co.jp Tel: +81 3 5665 9315 Area covered: Japan

G&P gp-tm.com Tel: +86 755 8318 5760 Area covered: China

GNV [email protected] Tel: +82 31 413 3050 Area covered: Korea

G-Tech g-tech-inst.com Tel: +886 3 6578000 Area covered: Taiwan

Joowon Industrial Co., Ltd. joowon.co.kr Tel: +82 31 726 1585 Area covered: Korea

Marubun Corporation marubun.co.jp Tel: +81 3 3639 9881 Area covered: Japan

Vitech reliabilitysystems.com Tel: +61 1300 884 007 Area covered: Australia

European representatives (continued)

Belotti Sistemi S.a.s. belotti-online.it Tel: +390255308223 Area covered: Italy

Cambridge Vibration Maintenance Services Ltd (CVMSL) cvmsl.co.uk Tel: +44 (0) 1763 262112 Area covered: UK & Europe for repairs and calibration

Elsys BG Ltd. elsysbg.com Tel. +359 5230762 Area covered: Bulgaria

Envitest envitest.com Tel: +48 501 065536 Area covered: Poland

Esteq Engineering esteq.com Tel: +27.128099500 Area covered: South Africa

FGP Scandinavia fpgsensors.se Tel: +4687772633 Area covered: Sweden, Norway, Denmark

LB-acoustics Messgeräte GmbH LB-acoustics.at [email protected] Area covered: Austria, Czech Republic, Slovakia, Hungary, Romania, Slovenia, Croatia

Mera RPE nppmera.ru Tel. +7 (495) 5168916 Area covered: Russia-Moscow

Radiant-Elcom Ltd. ranet.ru Tel. +7 (495) 725 0304 Area covered: Russia-Moscow

Set Point Technologies setpoint.gr Tel: +302106100350 Area covered: Greece, Cyprus

Star Teknik starteknik.com.tr Tel. +90.216 651 07 00 Area covered: Turkey

Straintech Finland Oy straintech.fi Tel. +358 9 2957 0650 Area covered: Finland

TSI S.L. tsisl.es Tel: +34913459730 Area covered: Spain

Vibro-Meter Ukraine vibro-meter.com [email protected] Tel: +038 612 136498 Area covered: Ukraine

Sensorex distributors Sensorex distributors should only be used by European customers purchasing Sensorex products only.

Meggitt (Sensorex) [email protected] Tel: +33 450 95 43 70 Area covered: France

Allertz Exportlots AB [email protected] Tel: +46 16343401 Area covered: Sweden

Amos Sensoren & Messtechnik [email protected] Tel: +49 621 86 25 25 0 Area covered: Germany

Celmi SRL - Sensor division [email protected] Tel: +39 02 57 50 37 12 Area covered: Italy

RS Semitronic AS [email protected] Tel: +47 2137 8720 Area covered: Norway

Sensing [email protected] Tel: +34 91622 24 38 Area covered: Spain

Sensonor [email protected] Tel: +358207809401 Area covered: Finland

International contacts

Meggitt Sensing Systems France Countries covered: France, Switzerland (French speaking area) 10, rue Mercoeur 75011 Paris France Tel: +33 1 53 27 61 61 Fax: +33 1 53 27 61 62 Email: [email protected]

Meggitt Sensing Systems Germany Countries Covered: Austria, Germany, Switzerland (German speaking area) Hügelhof 44 88634 Herdwangen-Schönach Germany Tel: +49 7552 928 053 1 Fax: +49 7552 928 053 2 Email: [email protected]

Meggitt Sensing Systems SA Countries covered: Rest of Europe (including all CIS countries), Middle East and Africa Route de Moncor, 4 CH-1701 Fribourg Switzerland Tel: +41 26 407 1406 Fax: +41 26 407 1225 Email: [email protected]

Meggitt (Sensorex) Countries covered: Worldwide P.A.I. Archamps 74166 St Julien en Genevois France Tel: +33 450 95 43 70 Fax: +33 450 95 43 75 Email: [email protected]

Meggitt Sensing Systems UK Countries covered: United Kingdom and Ireland

General information

Meggitt Sensing Systems 30700 Rancho Viejo Road San Juan Capistrano California 92675-1748 USA Tel: +1 949 493 8181 +1 800 982 6732 Fax: +1 949 661 7231

Customer service Email: [email protected]

Contacts

Meggitt Sensing Systems30700 Rancho Viejo RoadSan Juan Capistrano, CA 92675-1748 USA

Tel: +1 949 493 8181Fax: +1 949 661 7231

www.meggittsensingsystems.comwww.meggitt.com

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